summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorGravatar Adam Chlipala <adam@chlipala.net>2011-11-05 15:05:13 -0400
committerGravatar Adam Chlipala <adam@chlipala.net>2011-11-05 15:05:13 -0400
commit954936dd180e34b79baca71e43d55a204dda9594 (patch)
treebb624710b05d07871646fc5a93a9b7014d5874dd
parent22d36c8605e1d006a379350e28a5f939f7082546 (diff)
Support the full set of XHTML character entities
-rw-r--r--.hgignore3
-rw-r--r--Makefile.am11
-rw-r--r--Makefile.in11
-rw-r--r--src/sources5
-rw-r--r--src/urweb.lex20
-rw-r--r--src/utf8.sig32
-rw-r--r--src/utf8.sml59
-rw-r--r--tests/entities.ur5
-rw-r--r--xml/parse.sml77
-rw-r--r--xml/xhtml-lat1.ent196
-rw-r--r--xml/xhtml-special.ent80
-rw-r--r--xml/xhtml-symbol.ent237
12 files changed, 724 insertions, 12 deletions
diff --git a/.hgignore b/.hgignore
index cfb45564..401353b3 100644
--- a/.hgignore
+++ b/.hgignore
@@ -48,6 +48,9 @@ doc/*.html
Makefile.coq
*.vo
+xml/parse
+xml/entities.sml
+
syntax: regexp
^Makefile$
diff --git a/Makefile.am b/Makefile.am
index 45e7d7e0..42e5d4d7 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -21,7 +21,7 @@ mlton: bin/urweb
clean-local:
rm -f src/*.mlton.grm.* src/*.mlton.lex.* \
- src/urweb.cm src/urweb.mlb
+ src/urweb.cm src/urweb.mlb xml/parse xml/entities.sml
rm -rf .cm src/.cm
src/urweb.cm: src/prefix.cm src/sources
@@ -55,11 +55,18 @@ MLTON := mlton
# MLTON += -profile $(PROFILE)
#endif
-bin/urweb: src/compiler.mlb src/urweb.mlb src/*.sig src/*.sml \
+bin/urweb: xml/entities.sml \
+ src/compiler.mlb src/urweb.mlb src/*.sig src/*.sml \
src/urweb.mlton.lex.sml \
src/urweb.mlton.grm.sig src/urweb.mlton.grm.sml
$(MLTON) -output $@ src/compiler.mlb
+xml/entities.sml: xml/parse xml/xhtml-lat1.ent xml/xhtml-special.ent xml/xhtml-symbol.ent
+ xml/parse >xml/entities.sml
+
+xml/parse: xml/parse.sml
+ $(MLTON) xml/parse.sml
+
install-exec-emacs:
if USE_EMACS
mkdir -p $(DESTDIR)$(SITELISP)
diff --git a/Makefile.in b/Makefile.in
index f8a7dfd9..c758310d 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -750,7 +750,7 @@ mlton: bin/urweb
clean-local:
rm -f src/*.mlton.grm.* src/*.mlton.lex.* \
- src/urweb.cm src/urweb.mlb
+ src/urweb.cm src/urweb.mlb xml/parse xml/entities.sml
rm -rf .cm src/.cm
src/urweb.cm: src/prefix.cm src/sources
@@ -782,11 +782,18 @@ src/urweb.mlton.grm.sig src/urweb.mlton.grm.sml: src/urweb.mlton.grm
# MLTON += -profile $(PROFILE)
#endif
-bin/urweb: src/compiler.mlb src/urweb.mlb src/*.sig src/*.sml \
+bin/urweb: xml/entities.sml \
+ src/compiler.mlb src/urweb.mlb src/*.sig src/*.sml \
src/urweb.mlton.lex.sml \
src/urweb.mlton.grm.sig src/urweb.mlton.grm.sml
$(MLTON) -output $@ src/compiler.mlb
+xml/entities.sml: xml/parse xml/xhtml-lat1.ent xml/xhtml-special.ent xml/xhtml-symbol.ent
+ xml/parse >xml/entities.sml
+
+xml/parse: xml/parse.sml
+ $(MLTON) xml/parse.sml
+
install-exec-emacs:
@USE_EMACS_TRUE@ mkdir -p $(DESTDIR)$(SITELISP)
@USE_EMACS_TRUE@ cp src/elisp/*.el $(DESTDIR)$(SITELISP)/
diff --git a/src/sources b/src/sources
index ebc2ab13..862845d5 100644
--- a/src/sources
+++ b/src/sources
@@ -47,6 +47,11 @@ export.sml
source.sml
+utf8.sig
+utf8.sml
+
+../xml/entities.sml
+
urweb.grm
urweb.lex
diff --git a/src/urweb.lex b/src/urweb.lex
index 19f28738..a989d933 100644
--- a/src/urweb.lex
+++ b/src/urweb.lex
@@ -113,6 +113,14 @@ fun initialize () = (xmlTag := [];
xmlString := false)
+structure StringMap = BinaryMapFn(struct
+ type ord_key = string
+ val compare = String.compare
+ end)
+
+val entities = foldl (fn ((key, value), entities) => StringMap.insert (entities, key, value))
+ StringMap.empty Entities.all
+
fun unescape loc s =
let
fun process (s, acc) =
@@ -141,20 +149,16 @@ fun unescape loc s =
let
val code = Substring.string (Substring.slice (code, 1, NONE))
in
- Option.map chr (Int.fromString code)
+ Option.map Utf8.encode (Int.fromString code)
end
- else case Substring.string code of
- "amp" => SOME #"&"
- | "lt" => SOME #"<"
- | "gt" => SOME #">"
- | "quot" => SOME #"\""
- | _ => NONE
+ else
+ Option.map Utf8.encode (StringMap.find (entities, Substring.string code))
in
case special of
NONE => (ErrorMsg.errorAt' loc ("Unsupported XML character entity "
^ Substring.string code);
"")
- | SOME ch => process (s, Substring.full (String.str ch) :: pre :: acc)
+ | SOME sp => process (s, Substring.full sp :: pre :: acc)
end
end
end
diff --git a/src/utf8.sig b/src/utf8.sig
new file mode 100644
index 00000000..4198f604
--- /dev/null
+++ b/src/utf8.sig
@@ -0,0 +1,32 @@
+(* Copyright (c) 2011, Adam Chlipala
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * - The names of contributors may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *)
+
+(* UTF-8 conversion *)
+
+signature UTF8 = sig
+ val encode : int -> string
+end
diff --git a/src/utf8.sml b/src/utf8.sml
new file mode 100644
index 00000000..cbd2fa5c
--- /dev/null
+++ b/src/utf8.sml
@@ -0,0 +1,59 @@
+(* Copyright (c) 2011, Adam Chlipala
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * - The names of contributors may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *)
+
+(* UTF-8 conversion *)
+
+structure Utf8 :> UTF8 = struct
+
+fun byte n = str (chr (Word.toInt n))
+
+fun encode n =
+ if n <= 0 then
+ raise Fail "Invalid character to UTF-8-encode"
+ else if n <= 0x7F then
+ str (chr n)
+ else if n <= 0x7FF then
+ let
+ val w = Word.fromInt n
+ val b1 = Word.orb (Word.fromInt (128 + 64), Word.>> (w, Word.fromInt 6))
+ val b2 = Word.orb (Word.fromInt 128, Word.andb (w, Word.fromInt 63))
+ in
+ byte b1 ^ byte b2
+ end
+ else if n <= 0xFFFF then
+ let
+ val w = Word.fromInt n
+ val b1 = Word.orb (Word.fromInt (128 + 64 + 32), Word.>> (w, Word.fromInt 12))
+ val b2 = Word.orb (Word.fromInt 128, Word.andb (Word.>> (w, Word.fromInt 6), Word.fromInt 63))
+ val b3 = Word.orb (Word.fromInt 128, Word.andb (w, Word.fromInt 63))
+ in
+ byte b1 ^ byte b2 ^ byte b3
+ end
+ else
+ raise Fail "Exceeded supported range for UTF-8 characters"
+
+end
diff --git a/tests/entities.ur b/tests/entities.ur
new file mode 100644
index 00000000..8b78edbc
--- /dev/null
+++ b/tests/entities.ur
@@ -0,0 +1,5 @@
+fun main () : transaction page = return <xml><body>
+ Hello world! &amp; so on, &copy; me today (8 &euro;)<br/>
+ &spades; &clubs; &hearts; &diams;<br/>
+ &dagger; DANGER &dagger;
+</body></xml>
diff --git a/xml/parse.sml b/xml/parse.sml
new file mode 100644
index 00000000..86ff3682
--- /dev/null
+++ b/xml/parse.sml
@@ -0,0 +1,77 @@
+(* Copyright (c) 2011, Adam Chlipala
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * - The names of contributors may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *)
+
+(* Building SML code from XML entity tables *)
+
+fun main () =
+ let
+ fun doFile fname =
+ let
+ val inf = TextIO.openIn fname
+
+ fun loop () =
+ case TextIO.inputLine inf of
+ NONE => TextIO.closeIn inf
+ | SOME line =>
+ if String.isPrefix "<!ENTITY " line then
+ case String.tokens (fn ch => Char.isSpace ch orelse ch = #">") line of
+ "<!ENTITY" :: ent :: exp :: _ =>
+ let
+ val exp = if String.isPrefix "\"&#" exp andalso String.isSuffix ";\"" exp then
+ let
+ val middle = String.substring (exp, 3, size exp - 5)
+ in
+ if CharVector.all Char.isDigit middle then
+ middle
+ else if String.isPrefix "38;#" middle then
+ String.extract (middle, 4, NONE)
+ else
+ raise Fail "Bad entity expression [1]"
+ end
+ else
+ raise Fail "Bad entity expansion [2]"
+ in
+ print ("\t\t(\"" ^ ent ^ "\", " ^ exp ^ "),\n");
+ loop ()
+ end
+ | _ => raise Fail "Bad ENTITY line"
+ else
+ loop ()
+ in
+ loop ()
+ end
+ in
+ print "structure Entities = struct\n";
+ print "\tval all = [\n";
+ doFile "xml/xhtml-lat1.ent";
+ doFile "xml/xhtml-special.ent";
+ doFile "xml/xhtml-symbol.ent";
+ print "\t(\"\", 0)]\n";
+ print "end\n"
+ end
+
+val () = main ()
diff --git a/xml/xhtml-lat1.ent b/xml/xhtml-lat1.ent
new file mode 100644
index 00000000..ffee223e
--- /dev/null
+++ b/xml/xhtml-lat1.ent
@@ -0,0 +1,196 @@
+<!-- Portions (C) International Organization for Standardization 1986
+ Permission to copy in any form is granted for use with
+ conforming SGML systems and applications as defined in
+ ISO 8879, provided this notice is included in all copies.
+-->
+<!-- Character entity set. Typical invocation:
+ <!ENTITY % HTMLlat1 PUBLIC
+ "-//W3C//ENTITIES Latin 1 for XHTML//EN"
+ "http://www.w3.org/TR/xhtml1/DTD/xhtml-lat1.ent">
+ %HTMLlat1;
+-->
+
+<!ENTITY nbsp "&#160;"> <!-- no-break space = non-breaking space,
+ U+00A0 ISOnum -->
+<!ENTITY iexcl "&#161;"> <!-- inverted exclamation mark, U+00A1 ISOnum -->
+<!ENTITY cent "&#162;"> <!-- cent sign, U+00A2 ISOnum -->
+<!ENTITY pound "&#163;"> <!-- pound sign, U+00A3 ISOnum -->
+<!ENTITY curren "&#164;"> <!-- currency sign, U+00A4 ISOnum -->
+<!ENTITY yen "&#165;"> <!-- yen sign = yuan sign, U+00A5 ISOnum -->
+<!ENTITY brvbar "&#166;"> <!-- broken bar = broken vertical bar,
+ U+00A6 ISOnum -->
+<!ENTITY sect "&#167;"> <!-- section sign, U+00A7 ISOnum -->
+<!ENTITY uml "&#168;"> <!-- diaeresis = spacing diaeresis,
+ U+00A8 ISOdia -->
+<!ENTITY copy "&#169;"> <!-- copyright sign, U+00A9 ISOnum -->
+<!ENTITY ordf "&#170;"> <!-- feminine ordinal indicator, U+00AA ISOnum -->
+<!ENTITY laquo "&#171;"> <!-- left-pointing double angle quotation mark
+ = left pointing guillemet, U+00AB ISOnum -->
+<!ENTITY not "&#172;"> <!-- not sign = angled dash,
+ U+00AC ISOnum -->
+<!ENTITY shy "&#173;"> <!-- soft hyphen = discretionary hyphen,
+ U+00AD ISOnum -->
+<!ENTITY reg "&#174;"> <!-- registered sign = registered trade mark sign,
+ U+00AE ISOnum -->
+<!ENTITY macr "&#175;"> <!-- macron = spacing macron = overline
+ = APL overbar, U+00AF ISOdia -->
+<!ENTITY deg "&#176;"> <!-- degree sign, U+00B0 ISOnum -->
+<!ENTITY plusmn "&#177;"> <!-- plus-minus sign = plus-or-minus sign,
+ U+00B1 ISOnum -->
+<!ENTITY sup2 "&#178;"> <!-- superscript two = superscript digit two
+ = squared, U+00B2 ISOnum -->
+<!ENTITY sup3 "&#179;"> <!-- superscript three = superscript digit three
+ = cubed, U+00B3 ISOnum -->
+<!ENTITY acute "&#180;"> <!-- acute accent = spacing acute,
+ U+00B4 ISOdia -->
+<!ENTITY micro "&#181;"> <!-- micro sign, U+00B5 ISOnum -->
+<!ENTITY para "&#182;"> <!-- pilcrow sign = paragraph sign,
+ U+00B6 ISOnum -->
+<!ENTITY middot "&#183;"> <!-- middle dot = Georgian comma
+ = Greek middle dot, U+00B7 ISOnum -->
+<!ENTITY cedil "&#184;"> <!-- cedilla = spacing cedilla, U+00B8 ISOdia -->
+<!ENTITY sup1 "&#185;"> <!-- superscript one = superscript digit one,
+ U+00B9 ISOnum -->
+<!ENTITY ordm "&#186;"> <!-- masculine ordinal indicator,
+ U+00BA ISOnum -->
+<!ENTITY raquo "&#187;"> <!-- right-pointing double angle quotation mark
+ = right pointing guillemet, U+00BB ISOnum -->
+<!ENTITY frac14 "&#188;"> <!-- vulgar fraction one quarter
+ = fraction one quarter, U+00BC ISOnum -->
+<!ENTITY frac12 "&#189;"> <!-- vulgar fraction one half
+ = fraction one half, U+00BD ISOnum -->
+<!ENTITY frac34 "&#190;"> <!-- vulgar fraction three quarters
+ = fraction three quarters, U+00BE ISOnum -->
+<!ENTITY iquest "&#191;"> <!-- inverted question mark
+ = turned question mark, U+00BF ISOnum -->
+<!ENTITY Agrave "&#192;"> <!-- latin capital letter A with grave
+ = latin capital letter A grave,
+ U+00C0 ISOlat1 -->
+<!ENTITY Aacute "&#193;"> <!-- latin capital letter A with acute,
+ U+00C1 ISOlat1 -->
+<!ENTITY Acirc "&#194;"> <!-- latin capital letter A with circumflex,
+ U+00C2 ISOlat1 -->
+<!ENTITY Atilde "&#195;"> <!-- latin capital letter A with tilde,
+ U+00C3 ISOlat1 -->
+<!ENTITY Auml "&#196;"> <!-- latin capital letter A with diaeresis,
+ U+00C4 ISOlat1 -->
+<!ENTITY Aring "&#197;"> <!-- latin capital letter A with ring above
+ = latin capital letter A ring,
+ U+00C5 ISOlat1 -->
+<!ENTITY AElig "&#198;"> <!-- latin capital letter AE
+ = latin capital ligature AE,
+ U+00C6 ISOlat1 -->
+<!ENTITY Ccedil "&#199;"> <!-- latin capital letter C with cedilla,
+ U+00C7 ISOlat1 -->
+<!ENTITY Egrave "&#200;"> <!-- latin capital letter E with grave,
+ U+00C8 ISOlat1 -->
+<!ENTITY Eacute "&#201;"> <!-- latin capital letter E with acute,
+ U+00C9 ISOlat1 -->
+<!ENTITY Ecirc "&#202;"> <!-- latin capital letter E with circumflex,
+ U+00CA ISOlat1 -->
+<!ENTITY Euml "&#203;"> <!-- latin capital letter E with diaeresis,
+ U+00CB ISOlat1 -->
+<!ENTITY Igrave "&#204;"> <!-- latin capital letter I with grave,
+ U+00CC ISOlat1 -->
+<!ENTITY Iacute "&#205;"> <!-- latin capital letter I with acute,
+ U+00CD ISOlat1 -->
+<!ENTITY Icirc "&#206;"> <!-- latin capital letter I with circumflex,
+ U+00CE ISOlat1 -->
+<!ENTITY Iuml "&#207;"> <!-- latin capital letter I with diaeresis,
+ U+00CF ISOlat1 -->
+<!ENTITY ETH "&#208;"> <!-- latin capital letter ETH, U+00D0 ISOlat1 -->
+<!ENTITY Ntilde "&#209;"> <!-- latin capital letter N with tilde,
+ U+00D1 ISOlat1 -->
+<!ENTITY Ograve "&#210;"> <!-- latin capital letter O with grave,
+ U+00D2 ISOlat1 -->
+<!ENTITY Oacute "&#211;"> <!-- latin capital letter O with acute,
+ U+00D3 ISOlat1 -->
+<!ENTITY Ocirc "&#212;"> <!-- latin capital letter O with circumflex,
+ U+00D4 ISOlat1 -->
+<!ENTITY Otilde "&#213;"> <!-- latin capital letter O with tilde,
+ U+00D5 ISOlat1 -->
+<!ENTITY Ouml "&#214;"> <!-- latin capital letter O with diaeresis,
+ U+00D6 ISOlat1 -->
+<!ENTITY times "&#215;"> <!-- multiplication sign, U+00D7 ISOnum -->
+<!ENTITY Oslash "&#216;"> <!-- latin capital letter O with stroke
+ = latin capital letter O slash,
+ U+00D8 ISOlat1 -->
+<!ENTITY Ugrave "&#217;"> <!-- latin capital letter U with grave,
+ U+00D9 ISOlat1 -->
+<!ENTITY Uacute "&#218;"> <!-- latin capital letter U with acute,
+ U+00DA ISOlat1 -->
+<!ENTITY Ucirc "&#219;"> <!-- latin capital letter U with circumflex,
+ U+00DB ISOlat1 -->
+<!ENTITY Uuml "&#220;"> <!-- latin capital letter U with diaeresis,
+ U+00DC ISOlat1 -->
+<!ENTITY Yacute "&#221;"> <!-- latin capital letter Y with acute,
+ U+00DD ISOlat1 -->
+<!ENTITY THORN "&#222;"> <!-- latin capital letter THORN,
+ U+00DE ISOlat1 -->
+<!ENTITY szlig "&#223;"> <!-- latin small letter sharp s = ess-zed,
+ U+00DF ISOlat1 -->
+<!ENTITY agrave "&#224;"> <!-- latin small letter a with grave
+ = latin small letter a grave,
+ U+00E0 ISOlat1 -->
+<!ENTITY aacute "&#225;"> <!-- latin small letter a with acute,
+ U+00E1 ISOlat1 -->
+<!ENTITY acirc "&#226;"> <!-- latin small letter a with circumflex,
+ U+00E2 ISOlat1 -->
+<!ENTITY atilde "&#227;"> <!-- latin small letter a with tilde,
+ U+00E3 ISOlat1 -->
+<!ENTITY auml "&#228;"> <!-- latin small letter a with diaeresis,
+ U+00E4 ISOlat1 -->
+<!ENTITY aring "&#229;"> <!-- latin small letter a with ring above
+ = latin small letter a ring,
+ U+00E5 ISOlat1 -->
+<!ENTITY aelig "&#230;"> <!-- latin small letter ae
+ = latin small ligature ae, U+00E6 ISOlat1 -->
+<!ENTITY ccedil "&#231;"> <!-- latin small letter c with cedilla,
+ U+00E7 ISOlat1 -->
+<!ENTITY egrave "&#232;"> <!-- latin small letter e with grave,
+ U+00E8 ISOlat1 -->
+<!ENTITY eacute "&#233;"> <!-- latin small letter e with acute,
+ U+00E9 ISOlat1 -->
+<!ENTITY ecirc "&#234;"> <!-- latin small letter e with circumflex,
+ U+00EA ISOlat1 -->
+<!ENTITY euml "&#235;"> <!-- latin small letter e with diaeresis,
+ U+00EB ISOlat1 -->
+<!ENTITY igrave "&#236;"> <!-- latin small letter i with grave,
+ U+00EC ISOlat1 -->
+<!ENTITY iacute "&#237;"> <!-- latin small letter i with acute,
+ U+00ED ISOlat1 -->
+<!ENTITY icirc "&#238;"> <!-- latin small letter i with circumflex,
+ U+00EE ISOlat1 -->
+<!ENTITY iuml "&#239;"> <!-- latin small letter i with diaeresis,
+ U+00EF ISOlat1 -->
+<!ENTITY eth "&#240;"> <!-- latin small letter eth, U+00F0 ISOlat1 -->
+<!ENTITY ntilde "&#241;"> <!-- latin small letter n with tilde,
+ U+00F1 ISOlat1 -->
+<!ENTITY ograve "&#242;"> <!-- latin small letter o with grave,
+ U+00F2 ISOlat1 -->
+<!ENTITY oacute "&#243;"> <!-- latin small letter o with acute,
+ U+00F3 ISOlat1 -->
+<!ENTITY ocirc "&#244;"> <!-- latin small letter o with circumflex,
+ U+00F4 ISOlat1 -->
+<!ENTITY otilde "&#245;"> <!-- latin small letter o with tilde,
+ U+00F5 ISOlat1 -->
+<!ENTITY ouml "&#246;"> <!-- latin small letter o with diaeresis,
+ U+00F6 ISOlat1 -->
+<!ENTITY divide "&#247;"> <!-- division sign, U+00F7 ISOnum -->
+<!ENTITY oslash "&#248;"> <!-- latin small letter o with stroke,
+ = latin small letter o slash,
+ U+00F8 ISOlat1 -->
+<!ENTITY ugrave "&#249;"> <!-- latin small letter u with grave,
+ U+00F9 ISOlat1 -->
+<!ENTITY uacute "&#250;"> <!-- latin small letter u with acute,
+ U+00FA ISOlat1 -->
+<!ENTITY ucirc "&#251;"> <!-- latin small letter u with circumflex,
+ U+00FB ISOlat1 -->
+<!ENTITY uuml "&#252;"> <!-- latin small letter u with diaeresis,
+ U+00FC ISOlat1 -->
+<!ENTITY yacute "&#253;"> <!-- latin small letter y with acute,
+ U+00FD ISOlat1 -->
+<!ENTITY thorn "&#254;"> <!-- latin small letter thorn,
+ U+00FE ISOlat1 -->
+<!ENTITY yuml "&#255;"> <!-- latin small letter y with diaeresis,
+ U+00FF ISOlat1 -->
diff --git a/xml/xhtml-special.ent b/xml/xhtml-special.ent
new file mode 100644
index 00000000..ca358b2f
--- /dev/null
+++ b/xml/xhtml-special.ent
@@ -0,0 +1,80 @@
+<!-- Special characters for XHTML -->
+
+<!-- Character entity set. Typical invocation:
+ <!ENTITY % HTMLspecial PUBLIC
+ "-//W3C//ENTITIES Special for XHTML//EN"
+ "http://www.w3.org/TR/xhtml1/DTD/xhtml-special.ent">
+ %HTMLspecial;
+-->
+
+<!-- Portions (C) International Organization for Standardization 1986:
+ Permission to copy in any form is granted for use with
+ conforming SGML systems and applications as defined in
+ ISO 8879, provided this notice is included in all copies.
+-->
+
+<!-- Relevant ISO entity set is given unless names are newly introduced.
+ New names (i.e., not in ISO 8879 list) do not clash with any
+ existing ISO 8879 entity names. ISO 10646 character numbers
+ are given for each character, in hex. values are decimal
+ conversions of the ISO 10646 values and refer to the document
+ character set. Names are Unicode names.
+-->
+
+<!-- C0 Controls and Basic Latin -->
+<!ENTITY quot "&#34;"> <!-- quotation mark, U+0022 ISOnum -->
+<!ENTITY amp "&#38;#38;"> <!-- ampersand, U+0026 ISOnum -->
+<!ENTITY lt "&#38;#60;"> <!-- less-than sign, U+003C ISOnum -->
+<!ENTITY gt "&#62;"> <!-- greater-than sign, U+003E ISOnum -->
+<!ENTITY apos "&#39;"> <!-- apostrophe = APL quote, U+0027 ISOnum -->
+
+<!-- Latin Extended-A -->
+<!ENTITY OElig "&#338;"> <!-- latin capital ligature OE,
+ U+0152 ISOlat2 -->
+<!ENTITY oelig "&#339;"> <!-- latin small ligature oe, U+0153 ISOlat2 -->
+<!-- ligature is a misnomer, this is a separate character in some languages -->
+<!ENTITY Scaron "&#352;"> <!-- latin capital letter S with caron,
+ U+0160 ISOlat2 -->
+<!ENTITY scaron "&#353;"> <!-- latin small letter s with caron,
+ U+0161 ISOlat2 -->
+<!ENTITY Yuml "&#376;"> <!-- latin capital letter Y with diaeresis,
+ U+0178 ISOlat2 -->
+
+<!-- Spacing Modifier Letters -->
+<!ENTITY circ "&#710;"> <!-- modifier letter circumflex accent,
+ U+02C6 ISOpub -->
+<!ENTITY tilde "&#732;"> <!-- small tilde, U+02DC ISOdia -->
+
+<!-- General Punctuation -->
+<!ENTITY ensp "&#8194;"> <!-- en space, U+2002 ISOpub -->
+<!ENTITY emsp "&#8195;"> <!-- em space, U+2003 ISOpub -->
+<!ENTITY thinsp "&#8201;"> <!-- thin space, U+2009 ISOpub -->
+<!ENTITY zwnj "&#8204;"> <!-- zero width non-joiner,
+ U+200C NEW RFC 2070 -->
+<!ENTITY zwj "&#8205;"> <!-- zero width joiner, U+200D NEW RFC 2070 -->
+<!ENTITY lrm "&#8206;"> <!-- left-to-right mark, U+200E NEW RFC 2070 -->
+<!ENTITY rlm "&#8207;"> <!-- right-to-left mark, U+200F NEW RFC 2070 -->
+<!ENTITY ndash "&#8211;"> <!-- en dash, U+2013 ISOpub -->
+<!ENTITY mdash "&#8212;"> <!-- em dash, U+2014 ISOpub -->
+<!ENTITY lsquo "&#8216;"> <!-- left single quotation mark,
+ U+2018 ISOnum -->
+<!ENTITY rsquo "&#8217;"> <!-- right single quotation mark,
+ U+2019 ISOnum -->
+<!ENTITY sbquo "&#8218;"> <!-- single low-9 quotation mark, U+201A NEW -->
+<!ENTITY ldquo "&#8220;"> <!-- left double quotation mark,
+ U+201C ISOnum -->
+<!ENTITY rdquo "&#8221;"> <!-- right double quotation mark,
+ U+201D ISOnum -->
+<!ENTITY bdquo "&#8222;"> <!-- double low-9 quotation mark, U+201E NEW -->
+<!ENTITY dagger "&#8224;"> <!-- dagger, U+2020 ISOpub -->
+<!ENTITY Dagger "&#8225;"> <!-- double dagger, U+2021 ISOpub -->
+<!ENTITY permil "&#8240;"> <!-- per mille sign, U+2030 ISOtech -->
+<!ENTITY lsaquo "&#8249;"> <!-- single left-pointing angle quotation mark,
+ U+2039 ISO proposed -->
+<!-- lsaquo is proposed but not yet ISO standardized -->
+<!ENTITY rsaquo "&#8250;"> <!-- single right-pointing angle quotation mark,
+ U+203A ISO proposed -->
+<!-- rsaquo is proposed but not yet ISO standardized -->
+
+<!-- Currency Symbols -->
+<!ENTITY euro "&#8364;"> <!-- euro sign, U+20AC NEW -->
diff --git a/xml/xhtml-symbol.ent b/xml/xhtml-symbol.ent
new file mode 100644
index 00000000..63c2abfa
--- /dev/null
+++ b/xml/xhtml-symbol.ent
@@ -0,0 +1,237 @@
+<!-- Mathematical, Greek and Symbolic characters for XHTML -->
+
+<!-- Character entity set. Typical invocation:
+ <!ENTITY % HTMLsymbol PUBLIC
+ "-//W3C//ENTITIES Symbols for XHTML//EN"
+ "http://www.w3.org/TR/xhtml1/DTD/xhtml-symbol.ent">
+ %HTMLsymbol;
+-->
+
+<!-- Portions (C) International Organization for Standardization 1986:
+ Permission to copy in any form is granted for use with
+ conforming SGML systems and applications as defined in
+ ISO 8879, provided this notice is included in all copies.
+-->
+
+<!-- Relevant ISO entity set is given unless names are newly introduced.
+ New names (i.e., not in ISO 8879 list) do not clash with any
+ existing ISO 8879 entity names. ISO 10646 character numbers
+ are given for each character, in hex. values are decimal
+ conversions of the ISO 10646 values and refer to the document
+ character set. Names are Unicode names.
+-->
+
+<!-- Latin Extended-B -->
+<!ENTITY fnof "&#402;"> <!-- latin small letter f with hook = function
+ = florin, U+0192 ISOtech -->
+
+<!-- Greek -->
+<!ENTITY Alpha "&#913;"> <!-- greek capital letter alpha, U+0391 -->
+<!ENTITY Beta "&#914;"> <!-- greek capital letter beta, U+0392 -->
+<!ENTITY Gamma "&#915;"> <!-- greek capital letter gamma,
+ U+0393 ISOgrk3 -->
+<!ENTITY Delta "&#916;"> <!-- greek capital letter delta,
+ U+0394 ISOgrk3 -->
+<!ENTITY Epsilon "&#917;"> <!-- greek capital letter epsilon, U+0395 -->
+<!ENTITY Zeta "&#918;"> <!-- greek capital letter zeta, U+0396 -->
+<!ENTITY Eta "&#919;"> <!-- greek capital letter eta, U+0397 -->
+<!ENTITY Theta "&#920;"> <!-- greek capital letter theta,
+ U+0398 ISOgrk3 -->
+<!ENTITY Iota "&#921;"> <!-- greek capital letter iota, U+0399 -->
+<!ENTITY Kappa "&#922;"> <!-- greek capital letter kappa, U+039A -->
+<!ENTITY Lambda "&#923;"> <!-- greek capital letter lamda,
+ U+039B ISOgrk3 -->
+<!ENTITY Mu "&#924;"> <!-- greek capital letter mu, U+039C -->
+<!ENTITY Nu "&#925;"> <!-- greek capital letter nu, U+039D -->
+<!ENTITY Xi "&#926;"> <!-- greek capital letter xi, U+039E ISOgrk3 -->
+<!ENTITY Omicron "&#927;"> <!-- greek capital letter omicron, U+039F -->
+<!ENTITY Pi "&#928;"> <!-- greek capital letter pi, U+03A0 ISOgrk3 -->
+<!ENTITY Rho "&#929;"> <!-- greek capital letter rho, U+03A1 -->
+<!-- there is no Sigmaf, and no U+03A2 character either -->
+<!ENTITY Sigma "&#931;"> <!-- greek capital letter sigma,
+ U+03A3 ISOgrk3 -->
+<!ENTITY Tau "&#932;"> <!-- greek capital letter tau, U+03A4 -->
+<!ENTITY Upsilon "&#933;"> <!-- greek capital letter upsilon,
+ U+03A5 ISOgrk3 -->
+<!ENTITY Phi "&#934;"> <!-- greek capital letter phi,
+ U+03A6 ISOgrk3 -->
+<!ENTITY Chi "&#935;"> <!-- greek capital letter chi, U+03A7 -->
+<!ENTITY Psi "&#936;"> <!-- greek capital letter psi,
+ U+03A8 ISOgrk3 -->
+<!ENTITY Omega "&#937;"> <!-- greek capital letter omega,
+ U+03A9 ISOgrk3 -->
+
+<!ENTITY alpha "&#945;"> <!-- greek small letter alpha,
+ U+03B1 ISOgrk3 -->
+<!ENTITY beta "&#946;"> <!-- greek small letter beta, U+03B2 ISOgrk3 -->
+<!ENTITY gamma "&#947;"> <!-- greek small letter gamma,
+ U+03B3 ISOgrk3 -->
+<!ENTITY delta "&#948;"> <!-- greek small letter delta,
+ U+03B4 ISOgrk3 -->
+<!ENTITY epsilon "&#949;"> <!-- greek small letter epsilon,
+ U+03B5 ISOgrk3 -->
+<!ENTITY zeta "&#950;"> <!-- greek small letter zeta, U+03B6 ISOgrk3 -->
+<!ENTITY eta "&#951;"> <!-- greek small letter eta, U+03B7 ISOgrk3 -->
+<!ENTITY theta "&#952;"> <!-- greek small letter theta,
+ U+03B8 ISOgrk3 -->
+<!ENTITY iota "&#953;"> <!-- greek small letter iota, U+03B9 ISOgrk3 -->
+<!ENTITY kappa "&#954;"> <!-- greek small letter kappa,
+ U+03BA ISOgrk3 -->
+<!ENTITY lambda "&#955;"> <!-- greek small letter lamda,
+ U+03BB ISOgrk3 -->
+<!ENTITY mu "&#956;"> <!-- greek small letter mu, U+03BC ISOgrk3 -->
+<!ENTITY nu "&#957;"> <!-- greek small letter nu, U+03BD ISOgrk3 -->
+<!ENTITY xi "&#958;"> <!-- greek small letter xi, U+03BE ISOgrk3 -->
+<!ENTITY omicron "&#959;"> <!-- greek small letter omicron, U+03BF NEW -->
+<!ENTITY pi "&#960;"> <!-- greek small letter pi, U+03C0 ISOgrk3 -->
+<!ENTITY rho "&#961;"> <!-- greek small letter rho, U+03C1 ISOgrk3 -->
+<!ENTITY sigmaf "&#962;"> <!-- greek small letter final sigma,
+ U+03C2 ISOgrk3 -->
+<!ENTITY sigma "&#963;"> <!-- greek small letter sigma,
+ U+03C3 ISOgrk3 -->
+<!ENTITY tau "&#964;"> <!-- greek small letter tau, U+03C4 ISOgrk3 -->
+<!ENTITY upsilon "&#965;"> <!-- greek small letter upsilon,
+ U+03C5 ISOgrk3 -->
+<!ENTITY phi "&#966;"> <!-- greek small letter phi, U+03C6 ISOgrk3 -->
+<!ENTITY chi "&#967;"> <!-- greek small letter chi, U+03C7 ISOgrk3 -->
+<!ENTITY psi "&#968;"> <!-- greek small letter psi, U+03C8 ISOgrk3 -->
+<!ENTITY omega "&#969;"> <!-- greek small letter omega,
+ U+03C9 ISOgrk3 -->
+<!ENTITY thetasym "&#977;"> <!-- greek theta symbol,
+ U+03D1 NEW -->
+<!ENTITY upsih "&#978;"> <!-- greek upsilon with hook symbol,
+ U+03D2 NEW -->
+<!ENTITY piv "&#982;"> <!-- greek pi symbol, U+03D6 ISOgrk3 -->
+
+<!-- General Punctuation -->
+<!ENTITY bull "&#8226;"> <!-- bullet = black small circle,
+ U+2022 ISOpub -->
+<!-- bullet is NOT the same as bullet operator, U+2219 -->
+<!ENTITY hellip "&#8230;"> <!-- horizontal ellipsis = three dot leader,
+ U+2026 ISOpub -->
+<!ENTITY prime "&#8242;"> <!-- prime = minutes = feet, U+2032 ISOtech -->
+<!ENTITY Prime "&#8243;"> <!-- double prime = seconds = inches,
+ U+2033 ISOtech -->
+<!ENTITY oline "&#8254;"> <!-- overline = spacing overscore,
+ U+203E NEW -->
+<!ENTITY frasl "&#8260;"> <!-- fraction slash, U+2044 NEW -->
+
+<!-- Letterlike Symbols -->
+<!ENTITY weierp "&#8472;"> <!-- script capital P = power set
+ = Weierstrass p, U+2118 ISOamso -->
+<!ENTITY image "&#8465;"> <!-- black-letter capital I = imaginary part,
+ U+2111 ISOamso -->
+<!ENTITY real "&#8476;"> <!-- black-letter capital R = real part symbol,
+ U+211C ISOamso -->
+<!ENTITY trade "&#8482;"> <!-- trade mark sign, U+2122 ISOnum -->
+<!ENTITY alefsym "&#8501;"> <!-- alef symbol = first transfinite cardinal,
+ U+2135 NEW -->
+<!-- alef symbol is NOT the same as hebrew letter alef,
+ U+05D0 although the same glyph could be used to depict both characters -->
+
+<!-- Arrows -->
+<!ENTITY larr "&#8592;"> <!-- leftwards arrow, U+2190 ISOnum -->
+<!ENTITY uarr "&#8593;"> <!-- upwards arrow, U+2191 ISOnum-->
+<!ENTITY rarr "&#8594;"> <!-- rightwards arrow, U+2192 ISOnum -->
+<!ENTITY darr "&#8595;"> <!-- downwards arrow, U+2193 ISOnum -->
+<!ENTITY harr "&#8596;"> <!-- left right arrow, U+2194 ISOamsa -->
+<!ENTITY crarr "&#8629;"> <!-- downwards arrow with corner leftwards
+ = carriage return, U+21B5 NEW -->
+<!ENTITY lArr "&#8656;"> <!-- leftwards double arrow, U+21D0 ISOtech -->
+<!-- Unicode does not say that lArr is the same as the 'is implied by' arrow
+ but also does not have any other character for that function. So lArr can
+ be used for 'is implied by' as ISOtech suggests -->
+<!ENTITY uArr "&#8657;"> <!-- upwards double arrow, U+21D1 ISOamsa -->
+<!ENTITY rArr "&#8658;"> <!-- rightwards double arrow,
+ U+21D2 ISOtech -->
+<!-- Unicode does not say this is the 'implies' character but does not have
+ another character with this function so rArr can be used for 'implies'
+ as ISOtech suggests -->
+<!ENTITY dArr "&#8659;"> <!-- downwards double arrow, U+21D3 ISOamsa -->
+<!ENTITY hArr "&#8660;"> <!-- left right double arrow,
+ U+21D4 ISOamsa -->
+
+<!-- Mathematical Operators -->
+<!ENTITY forall "&#8704;"> <!-- for all, U+2200 ISOtech -->
+<!ENTITY part "&#8706;"> <!-- partial differential, U+2202 ISOtech -->
+<!ENTITY exist "&#8707;"> <!-- there exists, U+2203 ISOtech -->
+<!ENTITY empty "&#8709;"> <!-- empty set = null set, U+2205 ISOamso -->
+<!ENTITY nabla "&#8711;"> <!-- nabla = backward difference,
+ U+2207 ISOtech -->
+<!ENTITY isin "&#8712;"> <!-- element of, U+2208 ISOtech -->
+<!ENTITY notin "&#8713;"> <!-- not an element of, U+2209 ISOtech -->
+<!ENTITY ni "&#8715;"> <!-- contains as member, U+220B ISOtech -->
+<!ENTITY prod "&#8719;"> <!-- n-ary product = product sign,
+ U+220F ISOamsb -->
+<!-- prod is NOT the same character as U+03A0 'greek capital letter pi' though
+ the same glyph might be used for both -->
+<!ENTITY sum "&#8721;"> <!-- n-ary summation, U+2211 ISOamsb -->
+<!-- sum is NOT the same character as U+03A3 'greek capital letter sigma'
+ though the same glyph might be used for both -->
+<!ENTITY minus "&#8722;"> <!-- minus sign, U+2212 ISOtech -->
+<!ENTITY lowast "&#8727;"> <!-- asterisk operator, U+2217 ISOtech -->
+<!ENTITY radic "&#8730;"> <!-- square root = radical sign,
+ U+221A ISOtech -->
+<!ENTITY prop "&#8733;"> <!-- proportional to, U+221D ISOtech -->
+<!ENTITY infin "&#8734;"> <!-- infinity, U+221E ISOtech -->
+<!ENTITY ang "&#8736;"> <!-- angle, U+2220 ISOamso -->
+<!ENTITY and "&#8743;"> <!-- logical and = wedge, U+2227 ISOtech -->
+<!ENTITY or "&#8744;"> <!-- logical or = vee, U+2228 ISOtech -->
+<!ENTITY cap "&#8745;"> <!-- intersection = cap, U+2229 ISOtech -->
+<!ENTITY cup "&#8746;"> <!-- union = cup, U+222A ISOtech -->
+<!ENTITY int "&#8747;"> <!-- integral, U+222B ISOtech -->
+<!ENTITY there4 "&#8756;"> <!-- therefore, U+2234 ISOtech -->
+<!ENTITY sim "&#8764;"> <!-- tilde operator = varies with = similar to,
+ U+223C ISOtech -->
+<!-- tilde operator is NOT the same character as the tilde, U+007E,
+ although the same glyph might be used to represent both -->
+<!ENTITY cong "&#8773;"> <!-- approximately equal to, U+2245 ISOtech -->
+<!ENTITY asymp "&#8776;"> <!-- almost equal to = asymptotic to,
+ U+2248 ISOamsr -->
+<!ENTITY ne "&#8800;"> <!-- not equal to, U+2260 ISOtech -->
+<!ENTITY equiv "&#8801;"> <!-- identical to, U+2261 ISOtech -->
+<!ENTITY le "&#8804;"> <!-- less-than or equal to, U+2264 ISOtech -->
+<!ENTITY ge "&#8805;"> <!-- greater-than or equal to,
+ U+2265 ISOtech -->
+<!ENTITY sub "&#8834;"> <!-- subset of, U+2282 ISOtech -->
+<!ENTITY sup "&#8835;"> <!-- superset of, U+2283 ISOtech -->
+<!ENTITY nsub "&#8836;"> <!-- not a subset of, U+2284 ISOamsn -->
+<!ENTITY sube "&#8838;"> <!-- subset of or equal to, U+2286 ISOtech -->
+<!ENTITY supe "&#8839;"> <!-- superset of or equal to,
+ U+2287 ISOtech -->
+<!ENTITY oplus "&#8853;"> <!-- circled plus = direct sum,
+ U+2295 ISOamsb -->
+<!ENTITY otimes "&#8855;"> <!-- circled times = vector product,
+ U+2297 ISOamsb -->
+<!ENTITY perp "&#8869;"> <!-- up tack = orthogonal to = perpendicular,
+ U+22A5 ISOtech -->
+<!ENTITY sdot "&#8901;"> <!-- dot operator, U+22C5 ISOamsb -->
+<!-- dot operator is NOT the same character as U+00B7 middle dot -->
+
+<!-- Miscellaneous Technical -->
+<!ENTITY lceil "&#8968;"> <!-- left ceiling = APL upstile,
+ U+2308 ISOamsc -->
+<!ENTITY rceil "&#8969;"> <!-- right ceiling, U+2309 ISOamsc -->
+<!ENTITY lfloor "&#8970;"> <!-- left floor = APL downstile,
+ U+230A ISOamsc -->
+<!ENTITY rfloor "&#8971;"> <!-- right floor, U+230B ISOamsc -->
+<!ENTITY lang "&#9001;"> <!-- left-pointing angle bracket = bra,
+ U+2329 ISOtech -->
+<!-- lang is NOT the same character as U+003C 'less than sign'
+ or U+2039 'single left-pointing angle quotation mark' -->
+<!ENTITY rang "&#9002;"> <!-- right-pointing angle bracket = ket,
+ U+232A ISOtech -->
+<!-- rang is NOT the same character as U+003E 'greater than sign'
+ or U+203A 'single right-pointing angle quotation mark' -->
+
+<!-- Geometric Shapes -->
+<!ENTITY loz "&#9674;"> <!-- lozenge, U+25CA ISOpub -->
+
+<!-- Miscellaneous Symbols -->
+<!ENTITY spades "&#9824;"> <!-- black spade suit, U+2660 ISOpub -->
+<!-- black here seems to mean filled as opposed to hollow -->
+<!ENTITY clubs "&#9827;"> <!-- black club suit = shamrock,
+ U+2663 ISOpub -->
+<!ENTITY hearts "&#9829;"> <!-- black heart suit = valentine,
+ U+2665 ISOpub -->
+<!ENTITY diams "&#9830;"> <!-- black diamond suit, U+2666 ISOpub -->