General Advice
As a rule, it’s good to start at the bottom of a Forthic file to get a bird’s eye view of what the app does and then move upwards to understand the pieces.
Also, don’t get hung up on trying to understand the details of a definition. It’s better to work downwards and just get the vibe of the words. If you understand what the words are meant to do, the meaning of the Forthic follows from that.
Be sure you familiarize yourself with Forthic Idioms. These will help guide the intent behind the words in a Forthic application.