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-rw-r--r--src/frame.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/src/frame.c b/src/frame.c
index c902d1a497b..4b5cb8ff0bd 100644
--- a/src/frame.c
+++ b/src/frame.c
@@ -2490,8 +2490,10 @@ The `menu-bar-lines' element of the list controls whether new frames\n\
Vemacs_iconified = Qnil;
DEFVAR_LISP ("mouse-position-function", &Vmouse_position_function,
- "If non-nil, function applied to the normal result of `mouse-position'.\n\
-This abnormal hook exists for the benefit of packages like XTerm-mouse\n\
+ "If non-nil, function to transform normal value of `mouse-position'.\n\
+`mouse-position' calls this function, passing its usual return value as\n\
+argument, and returns whatever this function returns.\n\
+This abnormal hook exists for the benefit of packages like `xt-mouse.el'\n\
which need to do mouse handling at the Lisp level.");
Vmouse_position_function = Qnil;