Clarify Button's text clipping

doc/classes/Button.xml

@@ -47,7 +47,7 @@
 			If set to something other than [constant TextServer.AUTOWRAP_OFF], the text gets wrapped inside the node's bounding rectangle.
 		</member>
 		<member name="clip_text" type="bool" setter="set_clip_text" getter="get_clip_text" default="false">
-			When this property is enabled, text that is too large to fit the button is clipped, when disabled the Button will always be wide enough to hold the text.
+			When this property is enabled, text that is too large to fit the button is clipped, when disabled the Button will always be wide enough to hold the text. The text is clipped only horizontally, so Button's height is not affected.
 		</member>
 		<member name="expand_icon" type="bool" setter="set_expand_icon" getter="is_expand_icon" default="false">
 			When enabled, the button's icon will expand/shrink to fit the button's size while keeping its aspect. See also [theme_item icon_max_width].