I would like to add my own aliases for commands. The user preferences, alias dialog does not work. When I click on thr green plus sign, a space appears where (I assume) I would type in the command and the desired alias. When I try to type in the command, the first command beginning with the first letter typed, highlights. When I type the second letter, the same thing happens. No text is inserted in the blank space. How do I customize my command aliases??? This is a new download..Win7 64bit.