See lisp/core.carp, proper docs are coming soon!
See lisp/gl.carp
Since the functions in Carp can't accept a variable number of args there are a bunch of helper macros that allows you to circumvent this limitation. Here are some examples:
(str* "This string " "and this string, here's a number " 123 ", etc...")
(println* "X = " x ", Y = " y)
(and* true false false true false)