[PATCH wayland] protocol: Clarify pointer axis event

[Jonas Ådahl]

Pointer axis events are in the same coordinate space as motion events.

Signed-off-by: Jonas Ådahl <jadahl at gmail.com>
---
 protocol/wayland.xml |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/protocol/wayland.xml b/protocol/wayland.xml
index 5e56cb8..e31cad4 100644
--- a/protocol/wayland.xml
+++ b/protocol/wayland.xml
@@ -863,7 +863,10 @@
 
     <event name="axis">
       <description summary="axis event">
-	Scroll and other axis notifications.
+	Scroll and other axis notifications.  The value parameter
+	is the length of a vector along an axis in a coordinate space
+	identical to those of motion events, representing the relative
+	movement along an axis.
       </description>
 
       <arg name="time" type="uint"/>
-- 
1.7.9.5