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-rw-r--r--toplevel/usage.ml3
1 files changed, 3 insertions, 0 deletions
diff --git a/toplevel/usage.ml b/toplevel/usage.ml
index 3c994cdc8..6054881f5 100644
--- a/toplevel/usage.ml
+++ b/toplevel/usage.ml
@@ -52,6 +52,9 @@ let print_usage_channel co command =
-boot boot mode (implies -q and -batch)
-emacs tells Coq it is executed under Emacs
-dump-glob f dump globalizations in file f (to be used by coqdoc)
+ -xml exports XML files either to the hierarchy rooted in
+ the directory $COQ_XML_LIBRARY_ROOT (if set) or to
+ stdout (if unset)
"
(* print the usage on standard error *)