There are many command aliases listed in the customer preferences. Not all of them work, however. Why? For example, PropertyPainter has two aliases  listed, MA and Matchprop. Only Matchprop is recognized. If I use MA, I get an "Unrecognized command" message. What is the secret to command aliases? Do I have to hold my toungue in a certain position? Are they governed by the phases of the moon? How about planetary alignment? And I still can't customize my command aliases. New download Win7 64bit.