>>9it is the same.
>>2not a scheme, but some kind of lisp with fucked mixed up prefix/infix/postfix notations and unicode operators with means of arity and associativity adjustment. not as edgy as symta though.
>>7i'm not an expert but believe it has. /. and //. (aka ReplaceAll and ReplaceRepeated) look like some sort of macroexpand-1 and macroexpand with explicit environment as second argument. there are also Hold and siblings for quotation.
all in all this is pretty peculiar (if not weird) language but the fact of proprietarity overweights everything for me. i wonder if that is subject to change.