wow lol. same name and everything. i guess it's not such an uncommon concept. i think i got the idea from anaphoric macros
thanks for pointing it out
[edit]it looks like there is only one global 'that, so it is unusable in functions. it seems more of a REPL mechanism at the moment. i guess to implement it in the spec would require wrapping things in (let that ...), or having it in the core