diff -r 7a3c8ee20667 -r a2e403565be2 UISpecificationTool.st
--- a/UISpecificationTool.st	Fri Jan 14 11:50:24 2000 +0100
+++ b/UISpecificationTool.st	Mon Jan 17 12:05:14 2000 +0100
@@ -617,6 +617,9 @@
 #verticalSpace
 'Vertical space between the sub components (in pixels).'
 
+#visibilityChannel
+'Aspect selector or binding for a boolean holder which makes the widget visible.'
+
 #windowIcon
 'Name of the message sent to the application returning an icon image for the top window.'