Please reconsider order of messages in posts acorrding to option reply. I don't understand why my answer
http://www.mapleprimes.com/questions/127969-Encapsulated-Transformation-Of-Expression
( Moments ago by to Axel Vogt) appears at the end of list instead to be in that branch where it should be.
I also know that branch menu is completly for other purposes, not for this.
