cfunction
src/core/io.c on line 529, column 1
(xprin to & xs)
Print to a file or other value explicitly (no dynamic bindings).
The value to print to is the first argument, and is otherwise the
same as `prin`. Returns nil.
(def b @"")
(xprin b "HOHOHO")
# => nil
b
# => "HOHOHO"