Sometimes, the quickest way to transcribe box-and-arrow diagrams on a computer is to use plain text markup. Unfortunately, this markup can be unreadable by people who aren't familiar with its syntax.
Is there a way to convert box-and-arrow markup into an image (png or svg)-- sort of like one would compile a LaTeX document or equation?
What I am envisioning is something that will take syntax like
A->B->C and create an image with three boxes that connects A to B to C.