We've added a new document to the SVN tree: WP 34S Command Alias Names for the Assembler.
The idea behind this is to ease the input of programs for the assembler by defining easier to type names for many commands. You can now write SWAP instead of x[<->] Y or 'A' instead of [alpha] A.
The wp34s_asm.exe version of the assembler needs an update by Neil while the .pl file already knows about the new feature.