Tips for golfing in 1+ What general tips do you have for golfing in 1+? I'm looking for ideas which can be applied to code-golf problems and which are also at least somewhat specific to 1+ (e.g. "remove unnecessary whitespace" is not an answer).

Please post one tip per answer.
Subroutines can have empty names

(|1+1&lt;) is a valid definition for a subroutine, invoked as ().