39 files changed, 1296 insertions, 8530 deletions
diff --git a/dev/Makefile.oug b/dev/Makefile.oug
new file mode 100644
index 00000000..ee69ea80
--- /dev/null
+++ b/dev/Makefile.oug
@@ -0,0 +1,74 @@
+#######################################################################
+#  v      #   The Coq Proof Assistant  /  The Coq Development Team    #
+# <O___,, #        INRIA-Rocquencourt  &  LRI-CNRS-Orsay              #
+#   \VV/  #############################################################
+#    //   #      This file is distributed under the terms of the      #
+#         #       GNU Lesser General Public License Version 2.1       #
+#######################################################################
+
+
+#### Source Code Analysis via Oug ####
+#### Cf http://home.gna.org/oug ####
+
+
+# To be used from top dir : make -f dev/Makefile.oug ...
+
+include Makefile.build
+
+# Oug location: in the path by default, native version
+
+OUG:=oug.x
+
+# NB: coq should have been compiled with the same ocaml version as oug
+
+# NOTA: it seems we obtain more useless elements reported when _not_
+# providing the .mli files, and also when giving a precise start point.
+# TO BE INVESTIGATED
+
+ml_of_cma = $(patsubst %.cmo,%.ml,$(filter %.cmo,$(shell cat $(1:.cma=.mllib.d))))
+local_ml_of_cma = $(filter $(dir $(1))%,$(call ml_of_cma,$(1)))
+mli_of_ml = $(foreach ml,$(1),$(wildcard $(ml)i))
+
+# Analysis of coqtop, without plugins
+
+COREML:=config/coq_config.ml $(call ml_of_cma, $(CORECMA))
+COREMLI:=$(call mli_of_ml,$(COREML))
+
+core.oug:
+	$(OUG) --dump-data $@ -rectypes $(MLINCLUDES) $(COREML)
+
+core.useless: core.oug
+	$(OUG) --load-data $< --no-reduce --print-loc --roots "<Coqtop.start>" --useless-elements $@
+
+core_intf.oug:
+	$(OUG) --dump-data $@ -rectypes $(MLINCLUDES) $(COREML) $(COREMLI)
+
+core_intf.useless: core_intf.oug
+	$(OUG) --load-data $< --no-reduce --print-loc --roots "<Coqtop.start>" --useless-elements $@
+
+# Analysis of coqchk, considering only files in the checker/ subdir
+
+CHECKERML:=$(call local_ml_of_cma,checker/check.cma)
+CHECKERMLI:=$(call mli_of_ml,$(CHECKERML))
+
+## BUG: in oug, include dirs have reversed priority compared with ocaml, cannot use CHKLIBS
+MYCHKINCL:=$(MLINCLUDES) -I checker
+
+checker.oug:
+	$(OUG) --dump-data $@ -rectypes $(MYCHKINCL) $(CHECKERML) #$(CHECKERMLI)
+
+checker.useless: checker.oug
+	$(OUG) --load-data $< --no-reduce --print-loc --roots "<Checker.start>" --useless-elements $@
+
+# Analysis of extraction
+
+EXTRACTIONML:=$(call local_ml_of_cma,$(EXTRACTIONCMA))
+EXTRACTIONMLI:=$(call mli_of_ml,$(EXTRACTIONMLI))
+
+extraction.oug:
+	$(OUG) --dump-data $@ -rectypes $(MLINCLUDES) $(EXTRACTIONML) #$(EXTRACTIONMLI)
+
+extraction.useless: extraction.oug
+	$(OUG) --load-data $< --no-reduce --print-loc --useless-elements $@
+
+# More to come ...
+\ No newline at end of file
diff --git a/dev/README b/dev/README
index 0e40e820..5edf64c8 100644
--- a/dev/README
+++ b/dev/README
@@ -32,16 +32,14 @@ perf-analysis: analysis of perfs measured on the compilation of user contribs
 cic.dtd:       official dtd of the calc. of ind. constr. for im/ex-portation
 
 
-Documentation of ML interfaces using tex (directory ocamlweb-doc)
+Documentation of ML interfaces using ocamldoc (directory ocamldoc/html)
 ----------------------------------------
-
-go in directory and call "make"
+"make mli-doc" in coq root directory.
 
 
 Other development tools (directory tools)
 -----------------------
 
-univdot: produces a graph of CIC universes
 Makefile.dir: makefile dedicated to intensive work in a given directory
 Makefile.subdir: makefile dedicated to intensive work in a given subdirectory
 Makefile.devel: utilities to automatically launch coq in various states
diff --git a/dev/base_include b/dev/base_include
index 05e87da1..9a788b7b 100644
--- a/dev/base_include
+++ b/dev/base_include
@@ -24,7 +24,6 @@
 #install_printer  (* identifier *) ppidset;;
 #install_printer  (* Intset.t *) ppintset;;
 #install_printer  (* label *) pplab;;
-(*#install_printer  (* mod_self_id *) ppmsid;;*)
 #install_printer  (* mod_bound_id *) ppmbid;;
 #install_printer  (* dir_path *) ppdir;;
 #install_printer  (* module_path *) ppmp;;
@@ -38,7 +37,6 @@
 #install_printer  (* values *) ppvalues;;
 #install_printer  (* Idpred.t *) pp_idpred;;
 #install_printer  (* Cpred.t *) pp_cpred;;
-#install_printer  (* transparent_state *) pp_transparent_state;;
 #install_printer ppzipper;;
 #install_printer ppstack;;
 #install_printer ppatom;;
@@ -78,7 +76,8 @@ open Pretyping.Default.Cases
 open Cbv
 open Classops
 open Clenv
-open Rawterm
+open Clenvtac
+open Glob_term
 open Coercion
 open Coercion.Default
 open Recordops
@@ -110,11 +109,9 @@ open Topconstr
 open Prettyp
 open Search
 
-open Clenvtac
 open Evar_refiner
 open Logic
 open Pfedit
-open Proof_trees
 open Proof_type
 open Redexpr
 open Refiner
@@ -126,7 +123,6 @@ open Decl_mode
 open Auto
 open Autorewrite
 open Contradiction
-open Dhyp
 open Eauto
 open Elim
 open Equality
@@ -172,7 +168,7 @@ let parse_constr = Pcoq.parse_string Pcoq.Constr.constr;;
 let parse_tac    = Pcoq.parse_string Pcoq.Tactic.tactic;;
 let parse_vernac = Pcoq.parse_string Pcoq.Vernac_.vernac;;
 
-(* build a term of type rawconstr without type-checking or resolution of 
+(* build a term of type glob_constr without type-checking or resolution of 
    implicit syntax *)
 
 let e s =
@@ -190,18 +186,27 @@ open Declarations;;
 
 let constbody_of_string s =
   let b = Global.lookup_constant (Nametab.locate_constant (qualid_of_string s)) in
-  Option.get b.const_body;;
+  Option.get (body_of_constant b);;
 
 (* Get the current goal *)
-
+(*
 let getgoal x = top_goal_of_pftreestate (Pfedit.get_pftreestate x);;
 
 let get_nth_goal n = nth_goal_of_pftreestate n (Pfedit.get_pftreestate ());;
 let current_goal () = get_nth_goal 1;;
-
+*)
 let pf_e gl s = 
   Constrintern.interp_constr (project gl) (pf_env gl) (parse_constr s);;
 
+(* Set usual printing since the global env is available from the tracer *)
+let _ = Constrextern.in_debugger := false
+let _ = Constrextern.set_extern_reference
+  (fun loc _ r -> Libnames.Qualid (loc,Nametab.shortest_qualid_of_global Idset.empty r));;
+
 open Toplevel
 let go = loop
 
+let _ =
+ print_string
+   ("\n\tOcaml toplevel with Coq printers and utilities (use go();; to exit)\n\n");
+ flush_all()
diff --git a/dev/db b/dev/db
index 22b76605..63c98bb6 100644
--- a/dev/db
+++ b/dev/db
@@ -6,7 +6,6 @@ install_printer Top_printers.ppidset
 install_printer Top_printers.ppevarsubst
 install_printer Top_printers.ppintset
 install_printer Top_printers.pplab
-install_printer Top_printers.ppmbid
 install_printer Top_printers.ppdir
 install_printer Top_printers.ppmp
 install_printer Top_printers.ppkn
@@ -18,7 +17,7 @@ install_printer Top_printers.ppclindex
 install_printer Top_printers.ppbigint
 
 install_printer Top_printers.pppattern
-install_printer Top_printers.pprawconstr
+install_printer Top_printers.ppglob_constr
 
 install_printer Top_printers.ppconstr
 install_printer Top_printers.ppuni
@@ -28,16 +27,13 @@ install_printer Top_printers.pptype
 install_printer Top_printers.ppj
 install_printer Top_printers.ppenv
 
-install_printer Top_printers.ppgoal
-install_printer Top_printers.ppsigmagoal
-install_printer Top_printers.pproof
 install_printer Top_printers.ppmetas
 install_printer Top_printers.ppevm
-install_printer Top_printers.ppclenv
+install_printer Top_printers.ppgoal
 
 install_printer Top_printers.pptac
 install_printer Top_printers.ppobj
 install_printer Top_printers.pploc
 install_printer Top_printers.prsubst
 install_printer Top_printers.prdelta
-install_printer Top_printers.ppconstr
+install_printer Top_printers.ppfconstr
diff --git a/dev/db_printers.ml b/dev/db_printers.ml
index 883103c3..f54df8a8 100644
--- a/dev/db_printers.ml
+++ b/dev/db_printers.ml
@@ -1,6 +1,6 @@
 (************************************************************************)
 (*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
-(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2011     *)
+(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2012     *)
 (*   \VV/  **************************************************************)
 (*    //   *      This file is distributed under the terms of the       *)
 (*         *       GNU Lesser General Public License Version 2.1        *)
diff --git a/dev/doc/about-hints b/dev/doc/about-hints
new file mode 100644
index 00000000..95712c3c
--- /dev/null
+++ b/dev/doc/about-hints
@@ -0,0 +1,454 @@
+An investigation of how ZArith lemmas could be classified in different
+automation classes
+
+- Reversible lemmas relating operators (to be declared as hints but
+  needing precedences)
+- Equivalent notions (one has to be considered as primitive and the
+  other rewritten into the canonical one)
+- Isomorphisms between structure (one structure has to be considered
+  as more primitive than the other for a give operator)
+- Irreversible simplifications (to be declared with precedences)
+- Reversible bottom-up simplifications (to be used in hypotheses)
+- Irreversible bottom-up simplifications (to be used in hypotheses
+  with precedences)
+- Rewriting rules (relevant for autorewrite, or for an improved auto)
+
+Note: this analysis, made in 2001, was previously stored in
+theories/ZArith/Zhints.v. It has been moved here to avoid obfuscating
+the standard library.
+
+(**********************************************************************)
+(** *        Reversible lemmas relating operators                     *)
+(** Probably to be declared as hints but need to define precedences   *)
+
+(** ** Conversion between comparisons/predicates and arithmetic operators *)
+
+(** Lemmas ending by eq *)
+(**
+<<
+Zegal_left: (x,y:Z)`x = y`->`x+(-y) = 0`
+Zabs_eq: (x:Z)`0 <= x`->`|x| = x`
+Zeven_div2: (x:Z)(Zeven x)->`x = 2*(Zdiv2 x)`
+Zodd_div2: (x:Z)`x >= 0`->(Zodd x)->`x = 2*(Zdiv2 x)+1`
+>>
+*)
+
+(** Lemmas ending by Zgt *)
+(**
+<<
+Zgt_left_rev: (x,y:Z)`x+(-y) > 0`->`x > y`
+Zgt_left_gt: (x,y:Z)`x > y`->`x+(-y) > 0`
+>>
+*)
+
+(** Lemmas ending by Zlt *)
+(**
+<<
+Zlt_left_rev: (x,y:Z)`0 < y+(-x)`->`x < y`
+Zlt_left_lt: (x,y:Z)`x < y`->`0 < y+(-x)`
+Zlt_O_minus_lt: (n,m:Z)`0 < n-m`->`m < n`
+>>
+*)
+
+(** Lemmas ending by Zle *)
+(**
+<<
+Zle_left: (x,y:Z)`x <= y`->`0 <= y+(-x)`
+Zle_left_rev: (x,y:Z)`0 <= y+(-x)`->`x <= y`
+Zlt_left: (x,y:Z)`x < y`->`0 <= y+(-1)+(-x)`
+Zge_left: (x,y:Z)`x >= y`->`0 <= x+(-y)`
+Zgt_left: (x,y:Z)`x > y`->`0 <= x+(-1)+(-y)`
+>>
+*)
+
+(** ** Conversion between nat comparisons and Z comparisons *)
+
+(** Lemmas ending by eq *)
+(**
+<<
+inj_eq: (x,y:nat)x=y->`(inject_nat x) = (inject_nat y)`
+>>
+*)
+
+(** Lemmas ending by Zge *)
+(**
+<<
+inj_ge: (x,y:nat)(ge x y)->`(inject_nat x) >= (inject_nat y)`
+>>
+*)
+
+(** Lemmas ending by Zgt *)
+(**
+<<
+inj_gt: (x,y:nat)(gt x y)->`(inject_nat x) > (inject_nat y)`
+>>
+*)
+
+(** Lemmas ending by Zlt *)
+(**
+<<
+inj_lt: (x,y:nat)(lt x y)->`(inject_nat x) < (inject_nat y)`
+>>
+*)
+
+(** Lemmas ending by Zle *)
+(**
+<<
+inj_le: (x,y:nat)(le x y)->`(inject_nat x) <= (inject_nat y)`
+>>
+*)
+
+(** ** Conversion between comparisons *)
+
+(** Lemmas ending by Zge *)
+(**
+<<
+not_Zlt: (x,y:Z)~`x < y`->`x >= y`
+Zle_ge: (m,n:Z)`m <= n`->`n >= m`
+>>
+*)
+
+(** Lemmas ending by Zgt *)
+(**
+<<
+Zle_gt_S: (n,p:Z)`n <= p`->`(Zs p) > n`
+not_Zle: (x,y:Z)~`x <= y`->`x > y`
+Zlt_gt: (m,n:Z)`m < n`->`n > m`
+Zle_S_gt: (n,m:Z)`(Zs n) <= m`->`m > n`
+>>
+*)
+
+(** Lemmas ending by Zlt *)
+(**
+<<
+not_Zge: (x,y:Z)~`x >= y`->`x < y`
+Zgt_lt: (m,n:Z)`m > n`->`n < m`
+Zle_lt_n_Sm: (n,m:Z)`n <= m`->`n < (Zs m)`
+>>
+*)
+
+(** Lemmas ending by Zle *)
+(**
+<<
+Zlt_ZERO_pred_le_ZERO: (x:Z)`0 < x`->`0 <= (Zpred x)`
+not_Zgt: (x,y:Z)~`x > y`->`x <= y`
+Zgt_le_S: (n,p:Z)`p > n`->`(Zs n) <= p`
+Zgt_S_le: (n,p:Z)`(Zs p) > n`->`n <= p`
+Zge_le: (m,n:Z)`m >= n`->`n <= m`
+Zlt_le_S: (n,p:Z)`n < p`->`(Zs n) <= p`
+Zlt_n_Sm_le: (n,m:Z)`n < (Zs m)`->`n <= m`
+Zlt_le_weak: (n,m:Z)`n < m`->`n <= m`
+Zle_refl: (n,m:Z)`n = m`->`n <= m`
+>>
+*)
+
+(** ** Irreversible simplification involving several comparaisons *)
+(**    useful with clear precedences *)
+
+(** Lemmas ending by Zlt *)
+(**
+<<
+Zlt_le_reg :(a,b,c,d:Z)`a < b`->`c <= d`->`a+c < b+d`
+Zle_lt_reg : (a,b,c,d:Z)`a <= b`->`c < d`->`a+c < b+d`
+>>
+*)
+
+(** ** What is decreasing here ? *)
+
+(** Lemmas ending by eq *)
+(**
+<<
+Zplus_minus: (n,m,p:Z)`n = m+p`->`p = n-m`
+>>
+*)
+
+(** Lemmas ending by Zgt *)
+(**
+<<
+Zgt_pred: (n,p:Z)`p > (Zs n)`->`(Zpred p) > n`
+>>
+*)
+
+(** Lemmas ending by Zlt *)
+(**
+<<
+Zlt_pred: (n,p:Z)`(Zs n) < p`->`n < (Zpred p)`
+>>
+*)
+
+(**********************************************************************)
+(** *                Useful Bottom-up lemmas                          *)
+
+(** ** Bottom-up simplification: should be used *)
+
+(** Lemmas ending by eq *)
+(**
+<<
+Zeq_add_S: (n,m:Z)`(Zs n) = (Zs m)`->`n = m`
+Zsimpl_plus_l: (n,m,p:Z)`n+m = n+p`->`m = p`
+Zplus_unit_left: (n,m:Z)`n+0 = m`->`n = m`
+Zplus_unit_right: (n,m:Z)`n = m+0`->`n = m`
+>>
+*)
+
+(** Lemmas ending by Zgt *)
+(**
+<<
+Zsimpl_gt_plus_l: (n,m,p:Z)`p+n > p+m`->`n > m`
+Zsimpl_gt_plus_r: (n,m,p:Z)`n+p > m+p`->`n > m`
+Zgt_S_n: (n,p:Z)`(Zs p) > (Zs n)`->`p > n`
+>>
+*)
+
+(** Lemmas ending by Zlt *)
+(**
+<<
+Zsimpl_lt_plus_l: (n,m,p:Z)`p+n < p+m`->`n < m`
+Zsimpl_lt_plus_r: (n,m,p:Z)`n+p < m+p`->`n < m`
+Zlt_S_n: (n,m:Z)`(Zs n) < (Zs m)`->`n < m`
+>>
+*)
+
+(** Lemmas ending by Zle *)
+(** << Zsimpl_le_plus_l: (p,n,m:Z)`p+n <= p+m`->`n <= m`
+Zsimpl_le_plus_r: (p,n,m:Z)`n+p <= m+p`->`n <= m`
+Zle_S_n: (n,m:Z)`(Zs m) <= (Zs n)`->`m <= n` >> *)
+
+(** ** Bottom-up irreversible (syntactic) simplification *)
+
+(** Lemmas ending by Zle *)
+(**
+<<
+Zle_trans_S: (n,m:Z)`(Zs n) <= m`->`n <= m`
+>>
+*)
+
+(** ** Other unclearly simplifying lemmas *)
+
+(** Lemmas ending by Zeq *)
+(**
+<<
+Zmult_eq: (x,y:Z)`x <> 0`->`y*x = 0`->`y = 0`
+>>
+*)
+
+(* Lemmas ending by Zgt *)
+(**
+<<
+Zmult_gt: (x,y:Z)`x > 0`->`x*y > 0`->`y > 0`
+>>
+*)
+
+(* Lemmas ending by Zlt *)
+(**
+<<
+pZmult_lt: (x,y:Z)`x > 0`->`0 < y*x`->`0 < y`
+>>
+*)
+
+(* Lemmas ending by Zle *)
+(**
+<<
+Zmult_le: (x,y:Z)`x > 0`->`0 <= y*x`->`0 <= y`
+OMEGA1: (x,y:Z)`x = y`->`0 <= x`->`0 <= y`
+>>
+*)
+
+
+(**********************************************************************)
+(** *        Irreversible lemmas with meta-variables                  *)
+(** To be used by EAuto                                               *)
+
+(* Hints Immediate *)
+(** Lemmas ending by eq *)
+(**
+<<
+Zle_antisym: (n,m:Z)`n <= m`->`m <= n`->`n = m`
+>>
+*)
+
+(** Lemmas ending by Zge *)
+(**
+<<
+Zge_trans: (n,m,p:Z)`n >= m`->`m >= p`->`n >= p`
+>>
+*)
+
+(** Lemmas ending by Zgt *)
+(**
+<<
+Zgt_trans: (n,m,p:Z)`n > m`->`m > p`->`n > p`
+Zgt_trans_S: (n,m,p:Z)`(Zs n) > m`->`m > p`->`n > p`
+Zle_gt_trans: (n,m,p:Z)`m <= n`->`m > p`->`n > p`
+Zgt_le_trans: (n,m,p:Z)`n > m`->`p <= m`->`n > p`
+>>
+*)
+
+(** Lemmas ending by Zlt *)
+(**
+<<
+Zlt_trans: (n,m,p:Z)`n < m`->`m < p`->`n < p`
+Zlt_le_trans: (n,m,p:Z)`n < m`->`m <= p`->`n < p`
+Zle_lt_trans: (n,m,p:Z)`n <= m`->`m < p`->`n < p`
+>>
+*)
+
+(** Lemmas ending by Zle *)
+(**
+<<
+Zle_trans: (n,m,p:Z)`n <= m`->`m <= p`->`n <= p`
+>>
+*)
+
+
+(**********************************************************************)
+(** *               Unclear or too specific lemmas                    *)
+(** Not to be used ?                                                  *)
+
+(** ** Irreversible and too specific (not enough regular) *)
+
+(** Lemmas ending by Zle *)
+(**
+<<
+Zle_mult: (x,y:Z)`x > 0`->`0 <= y`->`0 <= y*x`
+Zle_mult_approx: (x,y,z:Z)`x > 0`->`z > 0`->`0 <= y`->`0 <= y*x+z`
+OMEGA6: (x,y,z:Z)`0 <= x`->`y = 0`->`0 <= x+y*z`
+OMEGA7: (x,y,z,t:Z)`z > 0`->`t > 0`->`0 <= x`->`0 <= y`->`0 <= x*z+y*t`
+>>
+*)
+
+(** ** Expansion and too specific ? *)
+
+(** Lemmas ending by Zge *)
+(**
+<<
+Zge_mult_simpl: (a,b,c:Z)`c > 0`->`a*c >= b*c`->`a >= b`
+>>
+*)
+
+(** Lemmas ending by Zgt *)
+(**
+<<
+Zgt_mult_simpl: (a,b,c:Z)`c > 0`->`a*c > b*c`->`a > b`
+Zgt_square_simpl: (x,y:Z)`x >= 0`->`y >= 0`->`x*x > y*y`->`x > y`
+>>
+*)
+
+(** Lemmas ending by Zle *)
+(**
+<<
+Zle_mult_simpl: (a,b,c:Z)`c > 0`->`a*c <= b*c`->`a <= b`
+Zmult_le_approx: (x,y,z:Z)`x > 0`->`x > z`->`0 <= y*x+z`->`0 <= y`
+>>
+*)
+
+(** ** Reversible but too specific ? *)
+
+(** Lemmas ending by Zlt *)
+(**
+<<
+Zlt_minus: (n,m:Z)`0 < m`->`n-m < n`
+>>
+*)
+
+(**********************************************************************)
+(** *               Lemmas to be used as rewrite rules                *)
+(** but can also be used as hints                                     *)
+
+(** Left-to-right simplification lemmas (a symbol disappears) *)
+
+(**
+<<
+Zcompare_n_S: (n,m:Z)(Zcompare (Zs n) (Zs m))=(Zcompare n m)
+Zmin_n_n: (n:Z)`(Zmin n n) = n`
+Zmult_1_n: (n:Z)`1*n = n`
+Zmult_n_1: (n:Z)`n*1 = n`
+Zminus_plus: (n,m:Z)`n+m-n = m`
+Zle_plus_minus: (n,m:Z)`n+(m-n) = m`
+Zopp_Zopp: (x:Z)`(-(-x)) = x`
+Zero_left: (x:Z)`0+x = x`
+Zero_right: (x:Z)`x+0 = x`
+Zplus_inverse_r: (x:Z)`x+(-x) = 0`
+Zplus_inverse_l: (x:Z)`(-x)+x = 0`
+Zopp_intro: (x,y:Z)`(-x) = (-y)`->`x = y`
+Zmult_one: (x:Z)`1*x = x`
+Zero_mult_left: (x:Z)`0*x = 0`
+Zero_mult_right: (x:Z)`x*0 = 0`
+Zmult_Zopp_Zopp: (x,y:Z)`(-x)*(-y) = x*y`
+>>
+*)
+
+(** Right-to-left simplification lemmas (a symbol disappears) *)
+
+(**
+<<
+Zpred_Sn: (m:Z)`m = (Zpred (Zs m))`
+Zs_pred: (n:Z)`n = (Zs (Zpred n))`
+Zplus_n_O: (n:Z)`n = n+0`
+Zmult_n_O: (n:Z)`0 = n*0`
+Zminus_n_O: (n:Z)`n = n-0`
+Zminus_n_n: (n:Z)`0 = n-n`
+Zred_factor6: (x:Z)`x = x+0`
+Zred_factor0: (x:Z)`x = x*1`
+>>
+*)
+
+(** Unclear orientation (no symbol disappears) *)
+
+(**
+<<
+Zplus_n_Sm: (n,m:Z)`(Zs (n+m)) = n+(Zs m)`
+Zmult_n_Sm: (n,m:Z)`n*m+n = n*(Zs m)`
+Zmin_SS: (n,m:Z)`(Zs (Zmin n m)) = (Zmin (Zs n) (Zs m))`
+Zplus_assoc_l: (n,m,p:Z)`n+(m+p) = n+m+p`
+Zplus_assoc_r: (n,m,p:Z)`n+m+p = n+(m+p)`
+Zplus_permute: (n,m,p:Z)`n+(m+p) = m+(n+p)`
+Zplus_Snm_nSm: (n,m:Z)`(Zs n)+m = n+(Zs m)`
+Zminus_plus_simpl: (n,m,p:Z)`n-m = p+n-(p+m)`
+Zminus_Sn_m: (n,m:Z)`(Zs (n-m)) = (Zs n)-m`
+Zmult_plus_distr_l: (n,m,p:Z)`(n+m)*p = n*p+m*p`
+Zmult_minus_distr: (n,m,p:Z)`(n-m)*p = n*p-m*p`
+Zmult_assoc_r: (n,m,p:Z)`n*m*p = n*(m*p)`
+Zmult_assoc_l: (n,m,p:Z)`n*(m*p) = n*m*p`
+Zmult_permute: (n,m,p:Z)`n*(m*p) = m*(n*p)`
+Zmult_Sm_n: (n,m:Z)`n*m+m = (Zs n)*m`
+Zmult_Zplus_distr: (x,y,z:Z)`x*(y+z) = x*y+x*z`
+Zmult_plus_distr: (n,m,p:Z)`(n+m)*p = n*p+m*p`
+Zopp_Zplus: (x,y:Z)`(-(x+y)) = (-x)+(-y)`
+Zplus_sym: (x,y:Z)`x+y = y+x`
+Zplus_assoc: (x,y,z:Z)`x+(y+z) = x+y+z`
+Zmult_sym: (x,y:Z)`x*y = y*x`
+Zmult_assoc: (x,y,z:Z)`x*(y*z) = x*y*z`
+Zopp_Zmult: (x,y:Z)`(-x)*y = (-(x*y))`
+Zplus_S_n: (x,y:Z)`(Zs x)+y = (Zs (x+y))`
+Zopp_one: (x:Z)`(-x) = x*(-1)`
+Zopp_Zmult_r: (x,y:Z)`(-(x*y)) = x*(-y)`
+Zmult_Zopp_left: (x,y:Z)`(-x)*y = x*(-y)`
+Zopp_Zmult_l: (x,y:Z)`(-(x*y)) = (-x)*y`
+Zred_factor1: (x:Z)`x+x = x*2`
+Zred_factor2: (x,y:Z)`x+x*y = x*(1+y)`
+Zred_factor3: (x,y:Z)`x*y+x = x*(1+y)`
+Zred_factor4: (x,y,z:Z)`x*y+x*z = x*(y+z)`
+Zminus_Zplus_compatible: (x,y,n:Z)`x+n-(y+n) = x-y`
+Zmin_plus: (x,y,n:Z)`(Zmin (x+n) (y+n)) = (Zmin x y)+n`
+>>
+*)
+
+(** nat <-> Z *)
+(**
+<<
+inj_S: (y:nat)`(inject_nat (S y)) = (Zs (inject_nat y))`
+inj_plus: (x,y:nat)`(inject_nat (plus x y)) = (inject_nat x)+(inject_nat y)`
+inj_mult: (x,y:nat)`(inject_nat (mult x y)) = (inject_nat x)*(inject_nat y)`
+inj_minus1:
+ (x,y:nat)(le y x)->`(inject_nat (minus x y)) = (inject_nat x)-(inject_nat y)`
+inj_minus2: (x,y:nat)(gt y x)->`(inject_nat (minus x y)) = 0`
+>>
+*)
+
+(** Too specific ? *)
+(**
+<<
+Zred_factor5: (x,y:Z)`x*0+y = y`
+>>
+*)
diff --git a/dev/doc/build-system.dev.txt b/dev/doc/build-system.dev.txt
index d4014303..3d9cba14 100644
--- a/dev/doc/build-system.dev.txt
+++ b/dev/doc/build-system.dev.txt
@@ -1,6 +1,22 @@
+
 Since July 2007, Coq features a build system overhauled by Pierre
 Corbineau and Lionel Elie Mamane.
 
+---------------------------------------------------------------------
+WARNING:
+In March 2010 this build system has been heavily adapted by Pierre
+Letouzey. In particular there no more explicit stage1,2. Stage3
+was removed some time ago when coqdep was splitted into coqdep_boot
+and full coqdep. Ideas are still similar to what is describe below,
+but:
+1) .ml4 are explicitely turned into .ml files, which stay after build
+2) we let "make" handle the inclusion of .d without trying to guess
+   what could be done at what time. Some initial inclusions hence
+  _fail_, but "make" tries again later and succeed.
+
+TODO: remove obsolete sections below and better describe the new approach
+-----------------------------------------------------------------------
+
 This file documents internals of the implementation of the build
 system. For what a Coq developer needs to know about the build system,
 see build-system.txt .
diff --git a/dev/doc/build-system.txt b/dev/doc/build-system.txt
index 9362aeeb..b243ebe2 100644
--- a/dev/doc/build-system.txt
+++ b/dev/doc/build-system.txt
@@ -1,12 +1,60 @@
 Since July 2007, Coq features a build system overhauled by Pierre
 Corbineau and Lionel Elie Mamane.
 
+---------------------------------------------------------------------
+WARNING:
+In March 2010 this build system has been heavily adapted by Pierre
+Letouzey. In particular there no more explicit stage1,2. Stage3
+was removed some time ago when coqdep was splitted into coqdep_boot
+and full coqdep. Ideas are still similar to what is describe below,
+but:
+1) .ml4 are explicitely turned into .ml files, which stay after build
+2) we let "make" handle the inclusion of .d without trying to guess
+   what could be done at what time. Some initial inclusions hence
+  _fail_, but "make" tries again later and succeed.
+
+TODO: remove obsolete sections below and better describe the new approach
+-----------------------------------------------------------------------
+
 This file documents what a Coq developer needs to know about the build
 system. If you want to enhance the build system itself (or are curious
 about its implementation details), see build-system.dev.txt .
 
 The build system is not at its optimal state, see TODO section.
 
+
+FAQ: special features used in this Makefile
+-------------------------------------------
+
+* Order-only dependencies: |
+
+Dependencies placed after a bar (|) should be built before
+the current rule, but having one of them is out-of-date do not
+trigger a rebuild of the current rule.
+See http://www.gnu.org/software/make/manual/make.htmlPrerequisite-Types
+
+* Annotation before commands: +/-/@
+
+a command starting by - is always successful (errors are ignored)
+a command starting by + is runned even if option -n is given to make
+a command starting by @ is not echoed before being runned
+
+* Custom functions
+
+Definition via "define foo" followed by commands (arg is $(1) etc)
+Call via "$(call foo,arg1)"
+
+* Useful builtin functions
+
+$(subst ...), $(patsubst ...), $(shell ...), $(foreach ...), $(if ...)
+
+* Behavior of -include
+
+If the file given to -include doesn't exist, make tries to build it,
+but doesn't care if this build fails. This can be quite surprising,
+see in particular the -include in Makefile.stage*
+
+
 Stages in build system
 ----------------------
 
diff --git a/dev/doc/changes.txt b/dev/doc/changes.txt
index 069f7d42..322530e6 100644
--- a/dev/doc/changes.txt
+++ b/dev/doc/changes.txt
@@ -1,4 +1,43 @@
 =========================================
+= CHANGES BETWEEN COQ V8.3 AND COQ V8.4 =
+=========================================
+
+** Functions in unification.ml have now the evar_map coming just after the env
+
+** Removal of Tacinterp.constr_of_id **
+
+Use instead either global_reference or construct_reference in constrintern.ml.
+
+** Optimizing calls to Evd functions **
+
+Evars are split into defined evars and undefined evars; for
+efficiency, when an evar is known to be undefined, it is preferable to
+use specific functions about undefined evars since these ones are
+generally fewer than the defined ones.
+
+** Type changes in TACTIC EXTEND rules **
+
+Arguments bound with tactic(_) in TACTIC EXTEND rules are now of type
+glob_tactic_expr, instead of glob_tactic_expr * tactic. Only the first
+component is kept, the second one can be obtained via
+Tacinterp.eval_tactic.
+
+** ARGUMENT EXTEND **
+
+It is now forbidden to use TYPED simultaneously with {RAW,GLOB}_TYPED
+in ARGUMENT EXTEND statements.
+
+** Renaming of rawconstr to glob_constr **
+
+The "rawconstr" type has been renamed to "glob_constr" for
+consistency. The "raw" in everything related to former rawconstr has
+been changed to "glob". For more details about the rationale and
+scripts to migrate code using Coq's internals, see commits 13743,
+13744, 13755, 13756, 13757, 13758, 13761 (by glondu, end of December
+2010) in Subversion repository. Contribs have been fixed too, and
+commit messages there might also be helpful for migrating.
+
+=========================================
 = CHANGES BETWEEN COQ V8.2 AND COQ V8.3 =
 =========================================
 
diff --git a/dev/doc/debugging.txt b/dev/doc/debugging.txt
index 50b3b45c..2480b8ed 100644
--- a/dev/doc/debugging.txt
+++ b/dev/doc/debugging.txt
@@ -11,6 +11,12 @@ Debugging from Coq toplevel using Caml trace mechanism
   6. Test your Coq command and observe the result of tracing your functions
   7. Freely switch from Coq to Ocaml toplevels with 'Drop.' and 'go();;'
 
+  You can avoid typing #use "include" (or "base_include") after Drop
+  by adding the following lines in your $HOME/.ocamlinit :
+
+   if Filename.basename Sys.argv.(0) = "coqtop.byte"
+   then ignore (Toploop.use_silently Format.std_formatter "include")
+
   Hints: To remove high-level pretty-printing features (coercions,
   notations, ...), use "Set Printing All". It will affect the #trace
   printers too.
diff --git a/dev/doc/perf-analysis b/dev/doc/perf-analysis
index d23bf835..ac54fa6f 100644
--- a/dev/doc/perf-analysis
+++ b/dev/doc/perf-analysis
@@ -1,13 +1,32 @@
 Performance analysis (trunk repository)
 ---------------------------------------
 
+Jun 7, 2010: delayed re-typing of Ltac instances in matching
+  (-1% on HighSchoolGeometry, -2% on JordanCurveTheorem)
+
+Jun 4, 2010: improvement in eauto and type classes inference by removing
+  systematic preparation of debugging pretty-printing streams (std_ppcmds)
+  (-7% in ATBR, visible only on V8.3 logs since ATBR is broken in trunk;
+   -6% in HighSchoolGeometry)
+
+Apr 19, 2010: small improvement obtained by reducing evar instantiation 
+  from O(n^3) to O(n^2) in the size of the instance (-2% in Compcert,
+  -2% AreaMethod, -15% in Ssreflect)
+
+Apr 17, 2010: small improvement obtained by not repeating unification
+  twice in auto (-2% in Compcert, -2% in Algebra)
+
+Feb 15, 2010: Global decrease due to unicode inefficiency repaired
+
+Jan 8, 2010: Global increase due to an inefficiency in unicode treatment
+
 Dec 1, 2009 - Dec 19, 2009: Temporary addition of [forall x, P x] hints to
   exact (generally not significative but, e.g., +25% on Subst, +8% on
   ZFC, +5% on AreaMethod)
 
 Oct 19, 2009: Change in modules (CoLoR +35%)
 
-Aug 9, 2009: new files added in AreaMethod 
+Aug 9, 2009: new files added in AreaMethod
 
 May 21, 2008: New version of CoRN
   (needs +84% more time to compile)
diff --git a/dev/doc/unification.txt b/dev/doc/unification.txt
new file mode 100644
index 00000000..6d05bcf5
--- /dev/null
+++ b/dev/doc/unification.txt
@@ -0,0 +1,208 @@
+Some notes about the use of unification in Coq
+----------------------------------------------
+
+There are several applications of unification and pattern-matching
+
+** Unification of types **
+
+- For type inference, inference of implicit arguments
+  * this basically amounts to solve problems of the form T <= U or T = U
+    where T and U are types coming from a given typing problem
+  * this kind of problem has to succeed and all the power of unification is
+    a priori expected (full beta/delta/iota/zeta/nu/mu, pattern-unification,
+    pruning, imitation/projection heuristics, ...)
+
+- For lemma application (apply, auto, ...)
+  * these are also problems of the form T <= U on types but with T
+    coming from a lemma and U from the goal
+  * it is not obvious that we always want unification and not matching
+  * it is not clear which amounts of delta one wants to use
+
+** Looking for subterms **
+
+- For tactics applying on subterms: induction, destruct, rewrite
+
+- As part of unification of types in the presence of higher-order
+  evars (e.g. when applying a lemma of conclusion "?P t")
+
+
+----------------------------------------------------------------------
+Here are examples of features one may want or not when looking for subterms
+
+A- REWRITING
+
+1- Full conversion on closed terms
+
+1a- Full conversion on closed terms in the presence of at least one evars (meta)
+
+Section A1.
+Variable y: nat.
+Hypothesis H: forall x, x+2 = 0.
+Goal y+(1+1) = 0.
+rewrite H.
+(* 0 = 0 *)
+Abort.
+
+Goal 2+(1+1) = 0.
+rewrite H.
+(* 0 = 0 *)
+Abort.
+
+(* This exists since the very beginning of Chet's unification for tactics *)
+(* But this fails for setoid rewrite *)
+
+1b- Full conversion on closed terms without any evars in the lemma
+
+1b.1- Fails on rewrite (because Unification.w_unify_to_subterm_list replaces
+  unification by check for a syntactic subterm if terms has no evar/meta)
+
+Goal 0+1 = 0 -> 0+(1+0) = 0.
+intros H; rewrite H.
+(* fails *)
+Abort.
+
+1b.2- Works with setoid rewrite
+
+Require Import Setoid.
+Goal 0+1 = 0 -> 0+(1+0) = 0.
+intros H; rewrite H at 1.
+(* 0 = 0 *)
+Abort.
+
+2- Using known instances in full conversion on closed terms
+
+Section A2.
+Hypothesis H: forall x, x+(2+x) = 0.
+Goal 1+(1+2) = 0.
+rewrite H.
+Abort.
+End A2.
+
+(* This exists since 8.2 (HH) *)
+
+3- Pattern-unification on Rels
+
+Section A3a.
+Variable F: (nat->nat->nat)->nat.
+Goal exists f, F (fun x y => f x y) = 0 -> F (fun x y => plus y x) = 0.
+eexists. intro H; rewrite H.
+(* 0 = 0 *)
+Abort.
+End A3a.
+
+(* Works since pattern unification on Meta applied to Rel was introduced *)
+(* in unification.ml (8.1, Sep 2006, HH) *)
+
+Section A3b.
+Variables x y: nat.
+Variable H: forall f, f x y = 0.
+Goal plus y x = 0.
+rewrite H.
+(* 0 = 0 *)
+Abort.
+End A3b.
+
+(* Works since pattern unification on all Meta was supported *)
+(* in unification.ml (8.4, Jun 2011, HH) *)
+
+4- Unification with open terms
+
+Section A4.
+Hypothesis H: forall x, S x = 0.
+Goal S 0 = 0.
+rewrite (H _).
+(* 0 = 0 *)
+Abort.
+End A4.
+
+(* Works since unification on Evar was introduced so as to support rewriting *)
+(* with open terms (8.2, MS, r11543, Unification.w_unify_to_subterm_list ) *)
+
+5- Unification of pre-existing evars
+
+5a- Basic unification of pre-existing evars
+
+Section A4.
+Variables x y: nat.
+Goal exists z, S z = 0 -> S (plus y x) = 0.
+eexists. intro H; rewrite H.
+(* 0 = 0 *)
+Abort.
+End A4.
+
+(* This worked in 8.2 and 8.3 as a side-effect of support for rewriting *)
+(* with open terms (8.2, MS, r11543) *)
+
+5b- Pattern-unification of pre-existing evars in rewriting lemma
+
+Goal exists f, forall x y, f x y = 0 -> plus y x = 0.
+eexists. intros x y H; rewrite H.
+(* 0 = 0 *)
+Abort.
+
+(* Works since pattern-unification on Evar was introduced *)
+(* in unification.ml (8.3, HH, r12229) *)
+(* currently governed by a flag: use_evars_pattern_unification *)
+
+5c- Pattern-unification of pre-existing evars in goal
+
+Goal exists f, forall x y, plus x y = 0 -> f y x = 0.
+eexists. intros x y H; rewrite H.
+(* 0 = 0 *)
+Abort.
+
+(* This worked in 8.2 and 8.3 but was removed for autorewrite in 8.4 *)
+
+5d- Mixing pattern-unification of pre-existing evars in goal and evars in lemma
+
+Goal exists f, forall x, (forall y, plus x y = 0) -> forall y:nat, f y x = 0.
+eexists. intros x H y. rewrite H.
+(* 0 = 0 *)
+Abort.
+
+(* This worked in 8.2 and 8.3 but was removed for autorewrite in 8.4 *)
+
+6- Multiple non-identical but convertible occurrences
+
+Tactic rewrite only considers the first one, from left-to-right, e.g.:
+
+Section A6.
+Variable y: nat.
+Hypothesis H: forall x, x+2 = 0.
+Goal (y+(2+0))+(y+(1+1)) = (y+(1+1))+(y+(2+0)).
+rewrite H.
+(* 0+(y+(1+1)) = y+(1+1)+0 *)
+Abort.
+End A6.
+
+Tactic setoid rewrite first looks for syntactically equal terms and if
+not uses the leftmost occurrence modulo delta.
+
+Require Import Setoid.
+Section A6.
+Variable y: nat.
+Hypothesis H: forall x, x+2 = 0.
+Goal (y+(2+0))+(y+2) = (y+2)+(y+(2+0)).
+rewrite H at 1 2 3 4.
+(* (y+(2+0))+0 = 0+(y+(2+0)) *)
+Abort.
+
+Goal (y+(2+0))+(y+(1+1)) = (y+(1+1))+(y+(2+0)).
+rewrite H at 1 2 3 4.
+(* 0+(y+(1+1)) = y+(1+1)+0 *)
+Abort.
+End A6.
+
+7- Conversion
+
+Section A6.
+Variable y: nat.
+Hypothesis H: forall x, S x = 0.
+Goal id 1 = 0.
+rewrite H.
+
+
+B- ELIMINATION (INDUCTION / CASE ANALYSIS)
+
+This is simpler because open terms are not allowed and no unification
+is involved (8.3).
diff --git a/dev/doc/universes.txt b/dev/doc/universes.txt
index 65c1e522..a40706e9 100644
--- a/dev/doc/universes.txt
+++ b/dev/doc/universes.txt
@@ -1,32 +1,26 @@
 How to debug universes?
 
-1. There is a command Dump Universes in Coq toplevel
+1. There is a command Print Universes in Coq toplevel
 
-   Dump Universes.
+   Print Universes.
      prints the graph of universes in the form of constraints
 
-   Dump Universes "file".
+   Print Universes "file".
      produces the "file" containing universe constraints in the form
        univ1 # univ2 ;
      where # can be either > >= or =
-     
-   The file produced by the latter command can be transformed using
-   the script univdot to dot format.
-   For example
 
-   univdot file | dot -Tps > file.ps
-
-   produces a graph of universes in ps format. 
-   > arrows are red, >= blue, and = black.
+   If "file" ends with .gv or .dot, the resulting file will be in
+   dot format.
 
 
    *) for dot see http://www.research.att.com/sw/tools/graphviz/
 
 
 2. There is a printing option
-  
-   Termast.print_universes : bool ref
 
-   which, when set (in ocaml after Drop), makes all pretty-printed
-   Type's annotated with the name of the universe.
+   {Set,Unset} Printing Universes.
+
+   which, when set, makes all pretty-printed Type's annotated with the
+   name of the universe.
 
diff --git a/dev/header b/dev/header
index d90be792..e5184df3 100644
--- a/dev/header
+++ b/dev/header
@@ -1,6 +1,6 @@
 (************************************************************************)
 (*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
-(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2010     *)
+(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2012     *)
 (*   \VV/  **************************************************************)
 (*    //   *      This file is distributed under the terms of the       *)
 (*         *       GNU Lesser General Public License Version 2.1        *)
diff --git a/dev/include b/dev/include
index 251a969b..69ac3c41 100644
--- a/dev/include
+++ b/dev/include
@@ -1,6 +1,19 @@
 
 (* File to include to install the pretty-printers in the ocaml toplevel *)
 
+(* Typical usage :
+
+   $ coqtop.byte    # or even better : rlwrap coqtop.byte
+   Coq < Drop.
+   # #use "include";;
+
+   Alternatively, you can avoid typing #use "include" after each Drop
+   by adding the following lines in your $HOME/.ocamlinit :
+
+   if Filename.basename Sys.argv.(0) = "coqtop.byte"
+   then ignore (Toploop.use_silently Format.std_formatter "include")
+*)
+
 (* For OCaml 3.10.x:
    clflags.cmi (a ocaml compilation by-product) must be in the library path.
    On Debian, install ocaml-compiler-libs, and uncomment the following:
@@ -14,7 +27,7 @@
 #install_printer  (* pp_stdcmds *) pppp;;
 
 #install_printer  (* pattern *) pppattern;;
-#install_printer  (* rawconstr *) pprawconstr;;
+#install_printer  (* glob_constr *) ppglob_constr;;
 
 #install_printer  (* constr *) ppconstr;;
 #install_printer  (* constr_substituted *) ppsconstr;; 
@@ -24,12 +37,14 @@
 #install_printer  (* judgement *) ppj;;
 
 #install_printer  (* hint_db *)  print_hint_db;;
+(*#install_printer  (* hints_path *)  pphintspath;;*)
 #install_printer  (* goal *)  ppgoal;;
-#install_printer  (* sigma goal *)  ppsigmagoal;;
-#install_printer  (* proof *)  pproof;;
-#install_printer  (* pftreestate *)  pppftreestate;;
+(*#install_printer  (* sigma goal *)  ppsigmagoal;;*)
+(*#install_printer  (* proof *)  pproof;;*)
+#install_printer  (* Goal.goal *)  ppgoalgoal;;
 #install_printer  (* metaset.t *) ppmetas;;
 #install_printer  (* evar_map *)  ppevm;;
+#install_printer  (* ExistentialSet.t *) ppexistentialset;;
 #install_printer  (* clenv *) ppclenv;;
 #install_printer  (* env *) ppenv;;
 
diff --git a/dev/macosify_accel.sh b/dev/macosify_accel.sh
new file mode 100755
index 00000000..23c557f0
--- /dev/null
+++ b/dev/macosify_accel.sh
@@ -0,0 +1,3 @@
+#!/usr/bin/sed -f
+s/^;\{0,1\} *\(.*\)<Control>\(.*\)$/\1<Primary>\2/
+s/^;\{0,1\} *\(.*\)<Alt>\(.*\)$/\1<Control>\2/
diff --git a/dev/ocamldoc/docintro b/dev/ocamldoc/docintro
new file mode 100644
index 00000000..33d20fc8
--- /dev/null
+++ b/dev/ocamldoc/docintro
@@ -0,0 +1,49 @@
+{!indexlist}
+
+This is Coq, a proof assistant for the Calculus of Inductive Constructions.
+This document describes the implementation of Coq.
+It has been automatically generated from the source of
+Coq using {{:http://caml.inria.fr/}ocamldoc}.
+The source files are organized in several directories ordered like that:
+
+{ol {- Utility libraries : lib
+
+describes the various utility libraries used in the code
+of Coq.}
+{- Kernel : kernel
+
+describes the Coq kernel, which is a type checker for the Calculus
+of Inductive Constructions.}
+{- Library : library
+
+describes the Coq library, which is made of two parts:
+- a general mechanism to keep a trace of all operations and of
+    the state of the system, with backtrack capabilities;
+- a global environment for the CCI, with functions to export and 
+    import compiled modules.
+
+}
+{- Pretyping : pretyping
+
+}
+{- Front abstract syntax of terms : interp
+
+describes the translation from Coq context-dependent
+front abstract syntax of terms {v constr_expr v} to and from the
+context-free, untyped, globalized form of constructions {v glob_constr v}.}
+{- Parsers and printers : parsing
+
+describes the implementation of the Coq parsers and printers.}
+{- Proof engine : proofs
+
+describes the Coq proof engine, which is also called
+the ``refiner'', since it provides a way to build terms by successive
+refining steps. Those steps are either primitive rules or higher-level
+tactics.}
+{- Tacticts : tactics
+
+describes the Coq main tactics.}
+{- Toplevel : toplevel
+
+describes the highest modules of the Coq system.}
+}
diff --git a/dev/ocamldoc/html/style.css b/dev/ocamldoc/html/style.css
new file mode 100644
index 00000000..c2c45b62
--- /dev/null
+++ b/dev/ocamldoc/html/style.css
@@ -0,0 +1,220 @@
+a:visited {
+  color: #416DFF; text-decoration: none; 
+}
+
+a:link {
+  color: #416DFF; text-decoration: none;
+}
+
+a:hover {
+  color: Red; text-decoration: none; background-color: #5FFF88
+}
+
+a:active {
+  color: Red; text-decoration: underline; 
+}
+
+.keyword {
+  font-weight: bold; color: Red 
+}
+
+.keywordsign {
+  color: #C04600 
+}
+
+.superscript {
+  font-size: 8 
+}
+
+.subscript {
+  font-size: 8 
+}
+
+.comment {
+  color: Green 
+}
+
+.constructor {
+  color: Blue 
+}
+
+.type {
+  color: #5C6585 
+}
+
+.string {
+  color: Maroon 
+}
+
+.warning {
+  color: Red; font-weight: bold 
+}
+
+.info {
+  margin-left: 3em; margin-right: 3em 
+}
+
+.param_info {
+  margin-top: 4px; margin-left: 3em; margin-right: 3em 
+}
+
+.code {
+  color: #465F91; 
+}
+
+h1 {
+  font-size: 20pt; text-align: center; 
+}
+
+h5, h6, div.h7, div.h8, div.h9 {
+  font-size: 20pt;
+  border: 1px solid #000000;
+  margin-top: 5px;
+  margin-bottom: 2px;
+  text-align: center;
+  padding: 2px;
+}
+
+h5 {
+  background-color: #90FDFF;
+}
+
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+  background-color: #016699;
+  color: white;
+}
+
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+  background-color: #E0FFFF;
+}
+
+div.h8 {
+  background-color: #F0FFFF;
+}
+
+div.h9 {
+  background-color: #FFFFFF;
+}
+
+.typetable, .indextable, .paramstable {
+  border-style: hidden;
+}
+
+.paramstable {
+  padding: 5pt 5pt;
+}
+
+body {
+  background-color: white;
+}
+
+tr {
+  background-color: white;
+}
+
+td.typefieldcomment {
+  background-color: #FFFFFF;
+  font-size: smaller;
+}
+
+pre {
+  margin-bottom: 4px;
+}
+
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+  margin-left: 2em;
+}
+
+
+h2 {
+  font-family: Arial, Helvetica, sans-serif;
+  font-size: 16pt;
+  font-weight: normal;
+  border-bottom: 1px solid #dadada;
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+  color: #101010;
+  background: #eeeeff;
+  margin: 25px 0px 10px 0px;
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+}
+
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+
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+  font-family: Arial, Helvetica, sans-serif;
+  font-size: 10pt;
+  color: #016699;
+  padding: 15px 0 0 0ex;
+  margin: 5px 0 0 0;
+}
+
+/* Here starts the overwrite of default rules to give a better look */
+
+body {
+  font-family: Calibri, Georgia, Garamond, Baskerville, serif;
+  font-size: 12pt;
+  background-color: white;
+}
+
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+  color: #6895c3 !important;
+}
+
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+  color: #2F4459 !important;
+  background-color: white;
+}
+
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+  height: 1px;
+  color: #016699;
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+}
+
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+  font-family: Cambria, Georgia, Garamond, Baskerville, serif;
+  color: #016699;
+}
+
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+  float: left;
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+  color: #016699;
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+  font-weight: bold;
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+
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+}
+
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+  margin-left: 1em;
+  font-size: 12pt;
+}
diff --git a/dev/ocamlweb-doc/Makefile b/dev/ocamlweb-doc/Makefile
deleted file mode 100644
index 3189d7c5..00000000
--- a/dev/ocamlweb-doc/Makefile
+++ /dev/null
@@ -1,90 +0,0 @@
-include ../../config/Makefile
-
-LOCALINCLUDES=-I ../../config -I ../../tools -I ../../tools/coqdoc \
-	      -I ../../scripts -I ../../lib -I ../../kernel -I ../../kernel/byterun -I ../../library \
-              -I ../../proofs -I ../../tactics -I ../../pretyping \
-              -I ../../interp -I ../../toplevel -I ../../parsing -I ../../ide/utils -I ../../ide \
-              -I ../../plugins/omega -I ../../plugins/romega \
-	      -I ../../plugins/ring -I ../../plugins/dp -I ../../plugins/setoid_ring \
-              -I ../../plugins/xml -I ../../plugins/extraction \
-              -I ../../plugins/fourier \
-	      -I ../../plugins/cc \
-	      -I ../../plugins/funind -I ../../plugins/firstorder \
-              -I ../../plugins/field -I ../../plugins/subtac -I ../../plugins/rtauto \
-              -I ../../plugins/recdef
-
-MLINCLUDES=$(LOCALINCLUDES) -I $(MYCAMLP4LIB)
-
-
-all:: newparse coq.ps minicop.ps
-#newsyntax.dvi minicoq.dvi
-
-
-OBJS=lex.cmo ast.cmo parse.cmo syntax.cmo
-
-newparse: $(OBJS) syntax.mli lex.ml syntax.ml
-	ocamlc -o newparse $(OBJS)
-
-%.cmo: %.ml
-	ocamlc -c $<
-
-%.cmi: %.mli
-	ocamlc -c $<
-
-%.ml: %.mll
-	ocamllex $<
-
-%.ml: %.mly
-	ocamlyacc -v $<
-
-%.mli: %.mly
-	ocamlyacc -v $<
-
-clean::
-	rm -f *.cm* *.output syntax.ml syntax.mli lex.ml newparse
-
-parse.cmo: ast.cmo
-syntax.cmi: parse.cmo
-syntax.cmo: lex.cmo parse.cmo syntax.cmi
-lex.cmo: syntax.cmi
-ast.cmo: ast.ml
-
-newsyntax.dvi: newsyntax.tex
-	latex $<
-	latex $<
-
-coq.dvi: coq.tex
-	latex coq
-	latex coq
-
-coq.tex::
-	ocamlweb -p "\usepackage{epsfig}" \
-	macros.tex intro.tex \
-	../../lib/{doc.tex,*.mli} ../../kernel/{doc.tex,*.mli} ../../library/{doc.tex,*.mli} \
-	../../pretyping/{doc.tex,*.mli} ../../interp/{doc.tex,*.mli} \
-	../../parsing/{doc.tex,*.mli} ../../proofs/{doc.tex,*.mli} \
-	../../tactics/{doc.tex,*.mli} ../../toplevel/{doc.tex,*.mli} \
-	-o coq.tex
-
-
-depend:: kernel.dep.ps library.dep.ps pretyping.dep.ps parsing.dep.ps \
-         proofs.dep.ps tactics.dep.ps toplevel.dep.ps interp.dep.ps
-
-%.dot: ../../%
-	ocamldoc -rectypes $(MLINCLUDES) -t $* -dot -dot-reduce ../../$*/*.ml ../../$*/*.mli -o $@
-
-%.dep.ps: %.dot
-	dot -Tps $< -o $@
-
-clean::
-	rm -f *~ *.log *.aux
-
-.SUFFIXES: .tex .dvi .ps .cmo .cmi .mli .ml .mll .mly
-
-%.dvi: %.tex
-	latex $< && latex $<
-
-%.ps: %.dvi
-	dvips $< -o $@
-
-
diff --git a/dev/ocamlweb-doc/ast.ml b/dev/ocamlweb-doc/ast.ml
deleted file mode 100644
index 4eb135d8..00000000
--- a/dev/ocamlweb-doc/ast.ml
+++ /dev/null
@@ -1,47 +0,0 @@
-
-type constr_ast =
-  Pair of constr_ast * constr_ast
-| Prod of binder list * constr_ast
-| Lambda of binder list * constr_ast
-| Let of string * constr_ast * constr_ast
-| LetCase of binder list * constr_ast * constr_ast
-| IfCase of constr_ast * constr_ast * constr_ast
-| Eval of red_fun * constr_ast
-| Infix of string * constr_ast * constr_ast
-| Prefix of string * constr_ast
-| Postfix of string * constr_ast
-| Appl of constr_ast * constr_arg list
-| ApplExpl of string list * constr_ast list
-| Scope of string * constr_ast
-| Qualid of string list
-| Prop | Set | Type
-| Int of string
-| Hole
-| Meta of string
-| Fixp of fix_kind *
-      (string * binder list * constr_ast * string option * constr_ast) list *
-      string
-| Match of case_item list * constr_ast option *
-           (pattern list * constr_ast) list
-
-and red_fun = Simpl
-
-and binder = string * constr_ast
-
-and constr_arg = string option * constr_ast
-
-and fix_kind = Fix | CoFix
-
-and case_item = constr_ast * (string option * constr_ast option)
-
-and pattern =
-  PatAs of pattern * string
-| PatType of pattern * constr_ast
-| PatConstr of string * pattern list
-| PatVar of string
-
-let mk_cast c t =
-  if t=Hole then c else Infix(":",c,t)
-
-let mk_lambda bl t =
-  if bl=[] then t else Lambda(bl,t)
diff --git a/dev/ocamlweb-doc/interp.dep.ps b/dev/ocamlweb-doc/interp.dep.ps
deleted file mode 100644
index fda7a33c..00000000
--- a/dev/ocamlweb-doc/interp.dep.ps
+++ /dev/null
@@ -1,545 +0,0 @@
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diff --git a/dev/ocamlweb-doc/intro.tex b/dev/ocamlweb-doc/intro.tex
deleted file mode 100644
index 4cec8673..00000000
--- a/dev/ocamlweb-doc/intro.tex
+++ /dev/null
@@ -1,25 +0,0 @@
-
-\ocwsection This is \Coq, a proof assistant for the \CCI.
-This document describes the implementation of \Coq.
-It has been automatically generated from the source of
-\Coq\ using \textsf{ocamlweb}, a literate programming tool for
-\textsf{Objective Caml}\footnote{\Coq, \textsf{Objective Caml} and
-  \textsf{ocamlweb} are all freely available at
-  \textsf{http://coq.inria.fr/}, \textsf{http://caml.inria.fr/} and
-  \textsf{http://www.lri.fr/\~{}filliatr/ocamlweb}.}.
-The source files are organized in several directories, which are
-described here as separate chapters.
-
-\begin{center}
-  \begin{tabular}{p{10cm}rr}
-    Chapter & section & page \\[0.5em]
-    \hline\\[0.2em]
-    Utility libraries \dotfill & \refsec{lib}     & \pageref{lib}     \\[0.5em]
-    Kernel            \dotfill & \refsec{kernel}  & \pageref{kernel}  \\[0.5em]
-    Library           \dotfill & \refsec{library} & \pageref{library} \\[0.5em]
-    Pretyping     \dotfill & \refsec{pretyping} & \pageref{pretyping} \\[0.5em]
-    Proof engine      \dotfill & \refsec{proofs}  & \pageref{proofs}  \\[0.5em]
-    Tactics           \dotfill & \refsec{tactics} & \pageref{tactics} \\[0.5em]
-    Toplevel          \dotfill & \refsec{toplevel}& \pageref{toplevel}\\[0.5em]
-  \end{tabular}
-\end{center}
-\ No newline at end of file
diff --git a/dev/ocamlweb-doc/kernel.dep.ps b/dev/ocamlweb-doc/kernel.dep.ps
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diff --git a/dev/ocamlweb-doc/lex.mll b/dev/ocamlweb-doc/lex.mll
deleted file mode 100644
index 059526d9..00000000
--- a/dev/ocamlweb-doc/lex.mll
+++ /dev/null
@@ -1,81 +0,0 @@
-
-{
- open Lexing
- open Syntax
-
- let chan_out = ref stdout
-
- let comment_depth = ref 0
- let print s = output_string !chan_out s
-
- exception Fin_fichier
-
-}
-
-let space = [' ' '\t' '\n']
-let letter = ['a'-'z' 'A'-'Z']
-let digit = ['0'-'9']
-
-let identifier = letter (letter | digit | ['_' '\''])*
-let number = digit+
-let oper = ['-' '+' '/' '*' '|' '>' '<' '=' '%' '#' '$' ':' '\\' '?'
-            '.' '!' '@' ]+
-
-rule token = parse
-  | "let" {LET}
-  | "in" {IN}
-  | "match" {MATCH}
-  | "with" {WITH}
-  | "end" {END}
-  | "and" {AND}
-  | "fun" {FUN}
-  | "if" {IF}
-  | "then" {THEN}
-  | "else" {ELSE}
-  | "eval" {EVAL}
-  | "for" {FOR}
-  | "Prop" {PROP}
-  | "Set" {SET}
-  | "Type" {TYPE}
-  | "fix" {FIX}
-  | "cofix" {COFIX}
-  | "struct" {STRUCT}
-  | "as" {AS}
-
-  | "Simpl" {SIMPL}
-
-  | "_" {WILDCARD}
-  | "(" {LPAR}
-  | ")" {RPAR}
-  | "{" {LBRACE}
-  | "}" {RBRACE}
-  | "!" {BANG}
-  | "@" {AT}
-  | ":" {COLON}
-  | ":=" {COLONEQ}
-  | "." {DOT}
-  | "," {COMMA}
-  | "->" {OPER "->"}
-  | "=>" {RARROW}
-  | "|" {BAR}
-  | "%" {PERCENT}
-
-  | '?' { META(ident lexbuf)}
-  | number { INT(Lexing.lexeme lexbuf) }
-  | oper { OPER(Lexing.lexeme lexbuf) }
-  | identifier { IDENT (Lexing.lexeme lexbuf) }
-  | "(*" (*"*)"*)       { comment_depth := 1;
-                          comment lexbuf;
-		          token lexbuf }
-  | space+     { token lexbuf}
-  | eof        { EOF }
-
-and ident = parse
-  | identifier { Lexing.lexeme lexbuf }
-
-and comment = parse
-  | "(*" (*"*)"*)  { incr comment_depth; comment lexbuf }
-  | (*"(*"*) "*)"
-      { decr comment_depth; if !comment_depth > 0 then comment lexbuf }
-  | eof   { raise Fin_fichier }
-  | _     { comment lexbuf }
diff --git a/dev/ocamlweb-doc/library.dep.ps b/dev/ocamlweb-doc/library.dep.ps
deleted file mode 100644
index c9bb351e..00000000
--- a/dev/ocamlweb-doc/library.dep.ps
+++ /dev/null
@@ -1,773 +0,0 @@
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diff --git a/dev/ocamlweb-doc/macros.tex b/dev/ocamlweb-doc/macros.tex
deleted file mode 100644
index 6beacf7b..00000000
--- a/dev/ocamlweb-doc/macros.tex
+++ /dev/null
@@ -1,7 +0,0 @@
-
-% macros for coq.tex
-
-\newcommand{\Coq}{\textsf{Coq}}
-\newcommand{\CCI}{Calculus of Inductive Constructions}
-
-\newcommand{\refsec}[1]{\textbf{\ref{#1}}}
-\ No newline at end of file
diff --git a/dev/ocamlweb-doc/parse.ml b/dev/ocamlweb-doc/parse.ml
deleted file mode 100644
index b145fffd..00000000
--- a/dev/ocamlweb-doc/parse.ml
+++ /dev/null
@@ -1,183 +0,0 @@
-
-open Ast
-
-type assoc = L | R | N
-
-let level = function
-  | "--" -> 70,L
-  | "=" -> 70,N
-  | "+" -> 60,L
-  | "++" -> 60,R
-  | "+++" -> 60,R
-  | "-" -> 60,L
-  | "*" -> 50,L
-  | "/" -> 50,L
-  | "**" -> 40,R
-  | ":" -> (100,R)
-  | "->" -> (90,R)
-  | s -> failwith ("unknowm operator '"^s^"'")
-
-let fixity = function
-  | "--" -> [L]
-  | "=" -> [N]
-  | ("+"|"-"|"*"|"/") -> [L;N]
-  | "++" -> [R]
-  | _ -> [L;N;R]
-
-let ground_oper = function
-    ("-"|"+") -> true
-  | _ -> false
-
-let is_prefix op = List.mem L (fixity op)
-let is_infix op = List.mem N (fixity op)
-let is_postfix op = List.mem R (fixity op)
-
-let mk_inf op t1 t2 =
-  if not (is_infix op) then failwith (op^" not infix");
-  Infix(op,t1,t2)
-
-let mk_post op t =
-  if not (is_postfix op) then failwith (op^" not postfix");
-  Postfix(op,t)
-
-
-(* Pb avec ground_oper: pas de diff entre -1 et -(1) *)
-let mk_pre op t =
-  if not (is_prefix op) then failwith (op^" not prefix");
-  if ground_oper op then
-    match t with
-    | Int i -> Int (op^i)
-    | _     -> Prefix(op,t)
-  else Prefix(op,t)
-
-(* teste si on peut reduire op suivi d'un op de niveau (n,a)
-   si la reponse est false, c'est que l'op (n,a) doit se reduire
-   avant *)
-let red_left_op (nl,al) (nr,ar) =
-  if nl < nr then true
-  else
-    if nl = nr then
-      match al,ar with
-        | (L|N), L -> true
-        | R, (R|N) -> false
-        | R, L ->  failwith "conflit d'assoc: ambigu"
-        | (L|N), (R|N) -> failwith "conflit d'assoc: blocage"
-    else false
-
-
-type level = int * assoc
-type stack =
-  | PrefixOper of string list
-  | Term of constr_ast * stack
-  | Oper of string list * string * constr_ast * stack
-
-let rec str_ast = function
-  | Infix(op,t1,t2) -> str_ast t1 ^ " " ^ op ^ " " ^ str_ast t2
-  | Postfix(op,t) -> str_ast t ^ " " ^ op
-  | Prefix(op,t) -> op ^ " " ^ str_ast t
-  | _ -> "_"
-
-let rec str_stack = function
-  | PrefixOper ops -> String.concat " " (List.rev ops)
-  | Term (t,s) -> str_stack s ^ " (" ^ str_ast t ^ ")"
-  | Oper(ops,lop,t,s) ->
-      str_stack (Term(t,s)) ^ " " ^ lop ^ " " ^
-      String.concat " " (List.rev ops)
-
-let pps s = prerr_endline (str_stack s)
-let err s stk = failwith (s^": "^str_stack stk)
-
-
-let empty = PrefixOper []
-
-let check_fixity_term stk =
-  match stk with
-      Term _ -> err "2 termes successifs" stk
-    | _ -> ()
-
-let shift_term t stk =
-  check_fixity_term stk;
-  Term(t,stk)
-
-let shift_oper op stk =
-  match stk with
-    | Oper(ops,lop,t,s) -> Oper(op::ops,lop,t,s)
-    | Term(t,s) -> Oper([],op,t,s)
-    | PrefixOper ops -> PrefixOper (op::ops)
-
-let is_reducible lv stk =
-  match stk with
-    | Oper([],iop,_,_)  -> red_left_op (level iop) lv
-    | Oper(op::_,_,_,_) -> red_left_op (level op) lv
-    | PrefixOper(op::_) -> red_left_op (level op) lv
-    | _                 -> false
-
-let reduce_head (t,stk) =
-  match stk with
-    | Oper([],iop,t1,s) ->
-        (Infix(iop,t1,t), s)
-    | Oper(op::ops,lop,t',s) ->
-        (mk_pre op t, Oper(ops,lop,t',s))
-    | PrefixOper(op::ops) ->
-        (Prefix(op,t), PrefixOper ops)
-    | _ -> assert false
-
-let rec reduce_level lv (t,s) =
-  if is_reducible lv s then reduce_level lv (reduce_head (t, s))
-  else (t, s)
-
-let reduce_post op (t,s) =
-  let (t',s') = reduce_level (level op) (t,s) in
-  (mk_post op t', s')
-
-let reduce_posts stk =
-  match stk with
-      Oper(ops,iop,t,s) ->
-        let pts1 = reduce_post iop (t,s) in
-        List.fold_right reduce_post ops pts1
-    | Term(t,s) -> (t,s)
-    | PrefixOper _ -> failwith "reduce_posts"
-
-
-let shift_infix op stk =
-  let (t,s) = reduce_level (level op) (reduce_posts stk) in
-  Oper([],op,t,s)
-
-let is_better_infix op stk =
-  match stk with
-    | Oper(ops,iop,t,s) ->
-        is_postfix iop &&
-        List.for_all is_postfix ops &&
-        (not (is_prefix op) || red_left_op (level iop) (level op))
-    | Term _ -> false
-    | _ -> assert false
-
-let parse_oper op stk =
-  match stk with
-    | PrefixOper _ ->
-        if is_prefix op then shift_oper op stk else failwith "prefix_oper"
-    | Oper _ ->
-        if is_infix op then
-          if is_better_infix op stk then shift_infix op stk
-          else shift_oper op stk
-        else if is_prefix op then shift_oper op stk
-        else if is_postfix op then
-          let (t,s) = reduce_post op (reduce_posts stk) in
-          Term(t,s)
-        else assert false
-    | Term(t,s) ->
-        if is_infix op then shift_infix op stk
-        else if is_postfix op then
-          let (t2,s2) = reduce_post op (t,s) in Term(t2,s2)
-        else failwith "infix/postfix"
-
-let parse_term = shift_term
-
-let rec close_stack stk =
-  match stk with
-      Term(t,PrefixOper []) -> t
-    | PrefixOper _ -> failwith "expression sans atomes"
-    | _ ->
-        let (t,s) = reduce_head (reduce_posts stk) in
-        close_stack (Term(t,s))
-
diff --git a/dev/ocamlweb-doc/parsing.dep.ps b/dev/ocamlweb-doc/parsing.dep.ps
deleted file mode 100644
index 723d8c69..00000000
--- a/dev/ocamlweb-doc/parsing.dep.ps
+++ /dev/null
@@ -1,1115 +0,0 @@
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diff --git a/dev/ocamlweb-doc/preamble.tex b/dev/ocamlweb-doc/preamble.tex
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index 2cd21f02..00000000
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-\documentclass[11pt]{article}
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diff --git a/dev/ocamlweb-doc/pretyping.dep.ps b/dev/ocamlweb-doc/pretyping.dep.ps
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diff --git a/dev/ocamlweb-doc/syntax.mly b/dev/ocamlweb-doc/syntax.mly
deleted file mode 100644
index bfc7d5cc..00000000
--- a/dev/ocamlweb-doc/syntax.mly
+++ /dev/null
@@ -1,224 +0,0 @@
-%{
-open Ast
-open Parse
-%}
-
-%token <string> META INT IDENT
-%token <string> OPER
-%token LPAR RPAR BAR COMMA COLON BANG FUN DOT RARROW LET COLONEQ IN IF
-%token THEN ELSE EVAL AT FOR PROP SET TYPE WILDCARD FIX
-%token COFIX MATCH WITH END AND LBRACE RBRACE STRUCT AS SIMPL PERCENT
-%token EOF
-
-%start main
-%type <Ast.constr_ast> main
-
-%start constr
-%type <Ast.constr_ast> constr
-
-%start simple_constr
-%type <Ast.constr_ast> simple_constr
-
-%%
-
-main:
-          constr EOF { $1 }
-;
-
-
-paren_constr:
-          constr COMMA paren_constr  { Pair($1,$3) }
-        | constr                     { $1 }
-;
-
-constr:
-          binder_constr  { $1 }
-        | oper_constr    { close_stack $1 }
-;
-
-binder_constr:
-          BANG ne_binders DOT constr              { Prod($2, $4) }
-        | FUN ne_binders type_cstr RARROW constr  { Lambda($2,mk_cast $5 $3) }
-        | LET IDENT binders type_cstr COLONEQ constr IN constr
-            { Let($2,mk_lambda $3 (mk_cast $6 $4),$8) }
-        | LET LPAR comma_binders RPAR COLONEQ constr IN constr
-            { LetCase($3,$6,$8) }
-        | IF constr THEN constr ELSE constr       { IfCase($2,$4,$6) }
-        | fix_constr                              { $1 }
-        | EVAL rfun IN constr                     { Eval($2,$4) }
-;
-
-comma_binders:
-          ne_comma_binders  { $1 }
-        |                   { [] }
-;
-
-ne_comma_binders:
-          binder COMMA ne_comma_binders  { $1 :: $3 }
-        | binder                         { [$1] }
-;
-
-rfun:
-          SIMPL  { Simpl }
-;
-
-
-/* 2 Conflits shift/reduce */
-oper_constr:
-          oper_constr oper appl_constr
-            { parse_term $3 (parse_oper $2 $1) }
-        | oper_constr oper binder_constr
-            { parse_term $3 (parse_oper $2 $1) }
-        | oper_constr oper  { parse_oper $2 $1 }
-        |                   { empty }
-        | appl_constr       { parse_term $1 empty }
-;
-
-oper:
-          OPER {$1}
-        | COLON {":"}
-;
-
-appl_constr:
-          simple_constr ne_appl_args  { Appl($1,$2) }
-        | AT global simple_constrs    { ApplExpl($2,$3) }
-        | simple_constr               { $1 }
-;
-
-appl_arg:
-          AT INT COLONEQ simple_constr  { (Some $2,$4) }
-        | simple_constr                 { (None,$1) }
-;
-
-ne_appl_args:
-          appl_arg               { [$1] }
-        | appl_arg ne_appl_args  { $1::$2 }
-;
-
-simple_constr:
-          atomic_constr                           { $1 }
-        | match_constr                            { $1 }
-        | LPAR paren_constr RPAR                  { $2 }
-        | simple_constr PERCENT IDENT { Scope($3,$1) }
-;
-
-simple_constrs:
-          simple_constr simple_constrs  { $1::$2 }
-        |                               { [] }
-;
-
-atomic_constr:
-          global    { Qualid $1 }
-        | PROP      { Prop }
-        | SET       { Set }
-        | TYPE      { Type }
-        | INT       { Int $1 }
-        | WILDCARD  { Hole }
-        | META      { Meta $1 }
-;
-
-global:
-          IDENT DOT global  { $1 :: $3 }
-        | IDENT             { [$1] }
-;
-
-/* Conflit normal */
-fix_constr:
-          fix_kw fix_decl
-            { let (id,_,_,_,_ as fx) = $2 in Fixp($1,[fx],id) }
-        | fix_kw fix_decl fix_decls FOR IDENT  { Fixp($1, $2::$3, $5) }
-;
-
-fix_kw: FIX {Fix} | COFIX {CoFix}
-;
-
-fix_decl:
-          IDENT binders type_cstr annot COLONEQ constr  { ($1,$2,$3,$4,$6) }
-;
-
-fix_decls:
-          AND fix_decl fix_decls  { $2::$3 }
-        | AND fix_decl            { [$2] }
-;
-
-annot:
-          LBRACE STRUCT IDENT RBRACE  { Some $3 }
-        |                             { None }
-;
-
-match_constr:
-          MATCH case_items case_type WITH branches END  { Match($2,$3,$5) }
-;
-
-case_items:
-          case_item                   { [$1] }
-        | case_item COMMA case_items  { $1::$3 }
-;
-
-case_item:
-          constr pred_pattern { ($1,$2) }
-;
-
-case_type:
-          RARROW constr  { Some $2 }
-        |                { None }
-;
-
-pred_pattern:
-          AS IDENT COLON constr  { (Some $2, Some $4) }
-        | AS IDENT               { (Some $2, None) }
-        | COLON constr           { (None, Some $2) }
-        |                        { (None,None) }
-;
-
-branches:
-          BAR branch_list  { $2 }
-        | branch_list      { $1 }
-        |                  { [] }
-;
-
-branch_list:
-          patterns RARROW constr                  { [$1, $3] }
-        | patterns RARROW constr BAR branch_list  { ($1,$3)::$5 }
-;
-
-patterns:
-          pattern                 { [$1] }
-        | pattern COMMA patterns  { $1::$3 }
-;
-
-pattern:
-          pattern AS IDENT       { PatAs($1,$3) }
-        | pattern COLON constr   { PatType($1,$3) }
-        | IDENT simple_patterns  { PatConstr($1,$2) }
-        | simple_pattern         { $1 }
-;
-
-simple_pattern:
-          IDENT              { PatVar $1 }
-        | LPAR pattern RPAR  { $2 }
-;
-
-simple_patterns:
-          simple_pattern                  { [$1] }
-        | simple_pattern simple_patterns  { $1::$2 }
-;
-
-binder:
-          IDENT                 { ($1,Hole) }
-        | LPAR IDENT type_cstr RPAR  { ($2,$3) }
-;
-
-binders:
-          ne_binders  { $1 }
-        |             { [] }
-
-ne_binders:
-          binder             { [$1] }
-        | binder ne_binders  { $1::$2 }
-;
-
-type_cstr:
-          COLON constr  { $2 }
-        |               { Hole }
-;
diff --git a/dev/ocamlweb-doc/tactics.dep.ps b/dev/ocamlweb-doc/tactics.dep.ps
deleted file mode 100644
index f4de22b7..00000000
--- a/dev/ocamlweb-doc/tactics.dep.ps
+++ /dev/null
@@ -1,991 +0,0 @@
-%!PS-Adobe-2.0
-%%Creator: dot version 2.2 (Wed Jan 19 21:09:25 UTC 2005)
-%%For: (herbelin) Hugo Herbelin
-%%Title: G
-%%Pages: (atend)
-%%BoundingBox: 35 35 577 165
-%%EndComments
-save
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-/DotDict 200 dict def
-DotDict begin
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-  dup 306 /AE
-  dup 301 /Aacute
-  dup 302 /Acircumflex
-  dup 304 /Adieresis
-  dup 300 /Agrave
-  dup 305 /Aring
-  dup 303 /Atilde
-  dup 307 /Ccedilla
-  dup 311 /Eacute
-  dup 312 /Ecircumflex
-  dup 313 /Edieresis
-  dup 310 /Egrave
-  dup 315 /Iacute
-  dup 316 /Icircumflex
-  dup 317 /Idieresis
-  dup 314 /Igrave
-  dup 334 /Udieresis
-  dup 335 /Yacute
-  dup 376 /thorn
-  dup 337 /germandbls
-  dup 341 /aacute
-  dup 342 /acircumflex
-  dup 344 /adieresis
-  dup 346 /ae
-  dup 340 /agrave
-  dup 345 /aring
-  dup 347 /ccedilla
-  dup 351 /eacute
-  dup 352 /ecircumflex
-  dup 353 /edieresis
-  dup 350 /egrave
-  dup 355 /iacute
-  dup 356 /icircumflex
-  dup 357 /idieresis
-  dup 354 /igrave
-  dup 360 /dcroat
-  dup 361 /ntilde
-  dup 363 /oacute
-  dup 364 /ocircumflex
-  dup 366 /odieresis
-  dup 362 /ograve
-  dup 365 /otilde
-  dup 370 /oslash
-  dup 372 /uacute
-  dup 373 /ucircumflex
-  dup 374 /udieresis
-  dup 371 /ugrave
-  dup 375 /yacute
-  dup 377 /ydieresis  
-
-% Set up ISO Latin 1 character encoding
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diff --git a/dev/printers.mllib b/dev/printers.mllib
index 889484ee..40a5a822 100644
--- a/dev/printers.mllib
+++ b/dev/printers.mllib
@@ -7,18 +7,16 @@ Flags
 Segmenttree
 Unicodetable
 Util
+Errors
 Bigint
 Hashcons
 Dyn
 System
 Envars
-Bstack
-Edit
-Gset
+Store
 Gmap
 Fset
 Fmap
-Tlm
 Gmapl
 Profile
 Explore
@@ -27,6 +25,7 @@ Rtree
 Heap
 Option
 Dnet
+Hashtbl_alt
 
 Names
 Univ
@@ -71,7 +70,7 @@ Assumptions
 Termops
 Namegen
 Evd
-Rawterm
+Glob_term
 Reductionops
 Inductiveops
 Retyping
@@ -81,6 +80,7 @@ Evarutil
 Term_dnet
 Recordops
 Evarconv
+Arguments_renaming
 Typing
 Pattern
 Matching
@@ -94,8 +94,9 @@ Coercion
 Unification
 Cases
 Pretyping
-Clenv
+Declaremods
 
+Tok
 Lexer
 Ppextend
 Genarg
@@ -104,17 +105,22 @@ Notation
 Dumpglob
 Reserve
 Impargs
-Constrextern
 Syntax_def
 Implicit_quantifiers
 Smartlocate
 Constrintern
-Proof_trees
+Modintern
+Constrextern
 Tacexpr
 Proof_type
+Goal
 Logic
 Refiner
+Clenv
 Evar_refiner
+Proofview
+Proof
+Proof_global
 Pfedit
 Tactic_debug
 Decl_mode
diff --git a/dev/tools/change-header b/dev/tools/change-header
new file mode 100755
index 00000000..61cc8666
--- /dev/null
+++ b/dev/tools/change-header
@@ -0,0 +1,55 @@
+#!/bin/sh
+
+#This script changes the header of .ml* files
+
+if [ ! $# = 2 ]; then
+  echo Usage: change-header old-header-file new-header-file
+  exit 1
+fi
+
+oldheader=$1
+newheader=$2
+
+if [ ! -f $oldheader ]; then echo Cannot read file $oldheader; exit 1; fi
+if [ ! -f $newheader ]; then echo Cannot read file $newheader; exit 1; fi
+
+n=`wc -l $oldheader | sed -e "s/ *\([0-9]*\).*/\1/g"`
+nsucc=`expr $n + 1`
+
+linea='(* -*- coding:utf-8 -*- *)'
+lineb='(* -*- compile-command: "make -C ../.. bin/coqdoc" -*- *)'
+
+modified=0
+kept=0
+
+for i in `find . -name \*.mli -o -name \*.ml -o -name \*.ml4 -o -name \*.mll -o -name \*.mly -o -name \*.mlp -o -name \*.v`; do
+  headline=`head -n 1 $i`
+  if `echo $headline | grep "(\* -\*- .* \*)" > /dev/null`; then
+      # Has emacs header
+      head -n +$nsucc $i | tail -n $n > $i.head.tmp$$
+      hasheadline=1
+      nnext=`expr $nsucc + 1`
+  else
+      head -n +$n $i > $i.head.tmp$$
+      hasheadline=0
+      nnext=$nsucc
+  fi
+  if diff -a -q $oldheader $i.head.tmp$$ > /dev/null; then
+    echo "$i: header changed"
+    if [ $hasheadline = 1 ]; then
+        echo $headline > $i.tmp$$
+    else
+        touch $i.tmp$$
+    fi
+    cat $newheader >> $i.tmp$$
+    tail -n +$nnext $i >> $i.tmp$$
+    mv $i.tmp$$ $i
+    modified=`expr $modified + 1`
+  else
+    kept=`expr $kept + 1`
+  fi
+  rm $i.head.tmp$$
+done
+
+echo $modified files updated 
+echo $kept files unchanged
diff --git a/dev/tools/univdot b/dev/tools/univdot
deleted file mode 100755
index bb0dd2c8..00000000
--- a/dev/tools/univdot
+++ /dev/null
@@ -1,49 +0,0 @@
-#!/bin/sh
-
-usage() {
-    echo ""
-    echo "usage: univdot [INPUT] [OUTPUT]"
-    echo ""
-    echo "takes the output of Dump Universes \"file\" command"
-    echo "and transforms it to the dot format"
-    echo ""
-    echo "Coq> Dump Universes \"univ.raw\"."
-    echo ""
-    echo "user@host> univdot univ.raw | dot -Tps > univ.ps" 
-    echo ""
-}
-    
-
-# these are dot edge attributes to draw arrows corresponding 
-# to > >= and = edges of the universe graph
-
-GT="[color=red]"
-GE="[color=blue]"
-EQ="[color=black]"
-
-
-# input/output redirection
-case $# in
-  0) ;;
-  1) case $1 in
-       -h|-help|--help) usage
-               exit 0 ;;
-       *) exec < $1 ;;
-     esac ;;
-  2) exec < $1 > $2 ;;
-  *) usage
-     exit 0;;
-esac
-
-
-# dot header
-echo 'digraph G {\
-  size="7.5,10" ;\
-  rankdir = TB ;'
-
-sed -e "s/^\([^ =>]\+\) > \([^ =>]\+\)/\1 -> \2 $GT/" \
-      -e "s/^\([^ =>]\+\) >= \([^ =>]\+\)/\1 -> \2 $GE/" \
-      -e "s/^\([^ =>]\+\) = \([^ =>]\+\)/\1 -> \2 $EQ/" \
-| sed -e "s/\./_/g" 
-
-echo "}"
-\ No newline at end of file
diff --git a/dev/top_printers.ml b/dev/top_printers.ml
index 3a6abd43..c55c4377 100644
--- a/dev/top_printers.ml
+++ b/dev/top_printers.ml
@@ -1,6 +1,6 @@
 (************************************************************************)
 (*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
-(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2011     *)
+(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2012     *)
 (*   \VV/  **************************************************************)
 (*    //   *      This file is distributed under the terms of the       *)
 (*         *       GNU Lesser General Public License Version 2.1        *)
@@ -16,22 +16,20 @@ open Libnames
 open Nameops
 open Sign
 open Univ
-open Proof_trees
 open Environ
 open Printer
 open Tactic_printer
-open Refiner
 open Term
 open Termops
-open Clenv
 open Cerrors
 open Evd
 open Goptions
 open Genarg
 open Mod_subst
-
+open Clenv
 
 let _ = Constrextern.print_evar_arguments := true
+let _ = Constrextern.print_universes := true
 let _ = set_bool_option_value ["Printing";"Matching"] false
 let _ = Detyping.set_detype_anonymous (fun _ _ -> raise Not_found)
 
@@ -58,13 +56,13 @@ let ppconstrdb x = pp(Flags.with_option rawdebug Termops.print_constr x)
 let ppterm = ppconstr
 let ppsconstr x = ppconstr (Declarations.force x)
 let ppconstr_univ x = Constrextern.with_universes ppconstr x
-let pprawconstr = (fun x -> pp(pr_lrawconstr x))
+let ppglob_constr = (fun x -> pp(pr_lglob_constr x))
 let pppattern = (fun x -> pp(pr_constr_pattern x))
-let pptype = (fun x -> pp(pr_ltype x))
+let pptype = (fun x -> try pp(pr_ltype x) with e -> pp (str (Printexc.to_string e)))
 
 let ppfconstr c = ppconstr (Closure.term_of_fconstr c)
 
-let ppbigint n = pp (Bigint.pr_bigint n);;
+let ppbigint n = pp (str (Bigint.to_string n));;
 
 let prset pr l = str "[" ++ hov 0 (prlist_with_sep spc pr l) ++ str "]"
 let ppintset l = pp (prset int (Intset.elements l))
@@ -114,22 +112,31 @@ let pp_transparent_state s = pp (pr_transparent_state s)
 
 (* proof printers *)
 let ppmetas metas = pp(pr_metaset metas)
-let ppevm evd = pp(pr_evar_map evd)
+let ppevm evd = pp(pr_evar_map (Some 2) evd)
+let ppevmall evd = pp(pr_evar_map None evd)
+let pr_existentialset evars =
+  prlist_with_sep spc pr_meta (ExistentialSet.elements evars)
+let ppexistentialset evars =
+  pp (pr_existentialset evars)
 let ppclenv clenv = pp(pr_clenv clenv)
-let ppgoal g = pp(db_pr_goal g)
+let ppgoalgoal gl = pp(Goal.pr_goal gl)
+let ppgoal g = pp(Printer.pr_goal g)
+(* spiwack: deactivated until a replacement is found
 let pppftreestate p = pp(print_pftreestate p)
+*)
 
-let pr_gls gls =
-  hov 0 (pr_evar_map (sig_sig gls) ++ fnl () ++ db_pr_goal (sig_it gls))
+(* let ppgoal g = pp(db_pr_goal g) *)
+(* let pr_gls gls = *)
+(*   hov 0 (pr_evar_defs (sig_sig gls) ++ fnl () ++ db_pr_goal (sig_it gls)) *)
 
-let pr_glls glls =
-  hov 0 (pr_evar_map (sig_sig glls) ++ fnl () ++
-         prlist_with_sep pr_fnl db_pr_goal (sig_it glls))
+(* let pr_glls glls = *)
+(*   hov 0 (pr_evar_defs (sig_sig glls) ++ fnl () ++ *)
+(*          prlist_with_sep pr_fnl db_pr_goal (sig_it glls)) *)
 
-let ppsigmagoal g = pp(pr_goal (sig_it g))
-let prgls gls = pp(pr_gls gls)
-let prglls glls = pp(pr_glls glls)
-let pproof p = pp(print_proof Evd.empty empty_named_context p)
+(* let ppsigmagoal g = pp(pr_goal (sig_it g)) *)
+(* let prgls gls = pp(pr_gls gls) *)
+(* let prglls glls = pp(pr_glls glls) *)
+(* let pproof p = pp(print_proof Evd.empty empty_named_context p) *)
 
 let ppuni u = pp(pr_uni u)
 
@@ -153,6 +160,7 @@ let cast_kind_display k =
   match k with
   | VMcast -> "VMcast"
   | DEFAULTcast -> "DEFAULTcast"
+  | REVERTcast -> "REVERTcast"
 
 let constr_display csr =
   let rec term_display c = match kind_of_term c with
@@ -412,12 +420,12 @@ let _ =
            (fun () -> in_current_context constr_display c)
        | _ -> failwith "Vernac extension: cannot occur")
   with
-    e -> Pp.pp (Cerrors.explain_exn e)
+    e -> Pp.pp (Errors.print e)
 let _ =
-  extend_vernac_command_grammar "PrintConstr"
+  extend_vernac_command_grammar "PrintConstr" None
     [[GramTerminal "PrintConstr";
       GramNonTerminal
-        (dummy_loc,ConstrArgType,Extend.Aentry ("constr","constr"),
+        (dummy_loc,ConstrArgType,Aentry ("constr","constr"),
 	 Some (Names.id_of_string "c"))]]
 
 let _ =
@@ -429,12 +437,12 @@ let _ =
            (fun () -> in_current_context print_pure_constr c)
        | _ -> failwith "Vernac extension: cannot occur")
   with
-    e -> Pp.pp (Cerrors.explain_exn e)
+    e -> Pp.pp (Errors.print e)
 let _ =
-  extend_vernac_command_grammar "PrintPureConstr"
+  extend_vernac_command_grammar "PrintPureConstr" None
     [[GramTerminal "PrintPureConstr";
       GramNonTerminal
-        (dummy_loc,ConstrArgType,Extend.Aentry ("constr","constr"),
+        (dummy_loc,ConstrArgType,Aentry ("constr","constr"),
 	 Some (Names.id_of_string "c"))]]
 
 (* Setting printer of unbound global reference *)
@@ -451,7 +459,7 @@ let encode_path loc prefix mpdir suffix id =
   Qualid (loc, make_qualid
     (make_dirpath (List.rev (id_of_string prefix::dir@suffix))) id)
 
-let raw_string_of_ref loc = function
+let raw_string_of_ref loc _ = function
   | ConstRef cst ->
       let (mp,dir,id) = repr_con cst in
       encode_path loc "CST" (Some (mp,dir)) [] (id_of_label id)
@@ -467,7 +475,7 @@ let raw_string_of_ref loc = function
   | VarRef id ->
       encode_path loc "SECVAR" None [] id
 
-let short_string_of_ref loc = function
+let short_string_of_ref loc _ = function
   | VarRef id -> Ident (loc,id)
   | ConstRef cst -> Ident (loc,id_of_label (pi3 (repr_con cst)))
   | IndRef (kn,0) -> Ident (loc,id_of_label (pi3 (repr_mind kn)))
@@ -479,5 +487,9 @@ let short_string_of_ref loc = function
         [id_of_label (pi3 (repr_mind kn));id_of_string ("_"^string_of_int i)]
         (id_of_string ("_"^string_of_int j))
 
-let _ = Constrextern.set_debug_global_reference_printer
+(* Anticipate that printers can be used from ocamldebug and that 
+   pretty-printer should not make calls to the global env since ocamldebug
+   runs in a different process and does not have the proper env at hand *)
+let _ = Constrextern.in_debugger := true
+let _ = Constrextern.set_extern_reference
   (if !rawdebug then raw_string_of_ref else short_string_of_ref)
diff --git a/dev/v8-syntax/syntax-v8.tex b/dev/v8-syntax/syntax-v8.tex
index 46ba24da..6630be06 100644
--- a/dev/v8-syntax/syntax-v8.tex
+++ b/dev/v8-syntax/syntax-v8.tex
@@ -977,7 +977,6 @@ $$
 \nlsep \TERM{Load}~\OPT{\TERM{Verbose}}~\NT{ident}
 \nlsep \TERM{Load}~\OPT{\TERM{Verbose}}~\NT{string}
 \nlsep \TERM{Declare}~\TERM{ML}~\TERM{Module}~\PLUS{\NT{string}}
-\nlsep \TERM{Dump}~\TERM{Universes}~\OPT{\NT{string}}
 \nlsep \TERM{Locate}~\NT{locatable}
 \nlsep \TERM{Add}~\OPT{\TERM{Rec}}~\TERM{LoadPath}~\NT{string}~\OPT{\NT{as-dirpath}}
 \nlsep \TERM{Remove}~\TERM{LoadPath}~\NT{string}
@@ -1179,8 +1178,6 @@ $$
 \nlsep \TERM{Show}~\TERM{Intros}
 %% Correctness: obsolete ?
 %%\nlsep \TERM{Show}~\TERM{Programs}
-\nlsep \TERM{Explain}~\TERM{Proof}~\OPT{\TERM{Tree}}~\STAR{\NT{num}}
-%% Go not documented
 \nlsep \TERM{Hint}~\OPT{\TERM{Local}}~\NT{hint}~\OPT{\NT{inbases}}
 %% PrintConstr not documented
 \end{rules}