Clarify situations where pinch events can be sent.

* doc/lispref/commands.texi (Misc Events): Clarify the
conditions under which pinch events will be sent.

diff --git a/doc/lispref/commands.texi b/doc/lispref/commands.texi
index bfb1f5a9474eb4523010af080567067efd8f20ae..0268d4d73a440771d538e36f25e05e67b7439b9b 100644 (file)
--- a/doc/lispref/commands.texi
+++ b/doc/lispref/commands.texi
@@ -2100,6 +2100,10 @@ between the fingers and that distance at the start of the sequence, and
 of the line connecting the fingers in this event and the direction of
 that line in the last event of the same sequence.
 
+As pinch events are only sent at the beginning or during a pinch
+sequence, they do not report gestures where the user moves two fingers
+on a touchpad in a rotating fashion without pinching the fingers.
+
 All arguments after @var{position} are floating point numbers.
 
 This event is usually sent as part of a sequence, which begins with