MatrixButtonHelper syntax ?

[Robert Ameeti]

In the Panorama Reference, I am reading MatrixButtonHelper to have 3 
parameters: ButtonList, ClickButton, & ButtonRectangle but the 
Example there only shows 2 parameters being used as well as the 
Panorama Handbook pg 934 example. The syntax checker also accepts 
this command without the 3rd parameter. Am I reading this wrong or is 
there no last parameter necessary (contrary to the way I've been 
reading the docs.)
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Robert Ameeti

A wise man can see more from a the bottom of a well than a fool can from a mountain top.
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