Jellyfish is a two-dimensional esoteric programming language inspired by J and written in Python 3. It was inspired by a challenge on PPCG. The name was suggested in PPCG chat as a combination of Jelly, a golfing language inspired by J, and Fish, a two-dimensional esoteric language.
What general tips do you have for golfing in Jellyfish? I'm looking for ideas which can be applied to code-golf problems and which are also at least somewhat specific to Jellyfish.