Capture and communicate acceptance criteria for software and systems, and how they are verified, in a way that’s understood by all project stakeholders, including end-users.
Subplot is a set of tools for specifying, documenting, and implementing automated acceptance tests for systems and software. Subplot tools help produce a human-readable document of acceptance criteria and a program that automatically tests a system against those criteria.
Subplot is currently in its ALPHA stage.
Found on
https://en.m.wikipedia.org/wiki/PIC_(markup_language)