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-rw-r--r--src/frame.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/frame.c b/src/frame.c
index bb0cfd48f89..128a6fef409 100644
--- a/src/frame.c
+++ b/src/frame.c
@@ -1989,6 +1989,8 @@ For a terminal screen, the value is always 1.")
DEFUN ("frame-pixel-height", Fframe_pixel_height,
Sframe_pixel_height, 0, 1, 0,
"Return a FRAME's height in pixels.\n\
+This counts only the height available for text lines,\n\
+not menu bars on window-system Emacs frames.\n\
For a terminal frame, the result really gives the height in characters.\n\
If FRAME is omitted, the selected frame is used.")
(frame)