Moving right along getting my TCC working the same as my 4DOS thanks to the help here. But the absence of a pseudovariable for 'Parameter' seems like an omission. I presume Rex has a reason for this, but I'm curious what it might be. Also, I'm finding keyboard aliases do most of what I want, but there are gaps, like 'Alt+UpArrow' can't be aliased. I'm using AutoHotkey for those, but if TCC handled them native, I'd need no other resources outside TCC to achieve symmetry between 4DOS and TCC, which would be as smooth as a baby's bum.