The "Scrap" window

Typing cmd-o in the "Scrap" window allows loading text files of any type. This window provides work space to edit grammars and data. For instance, another grammar may be loaded to the "Scrap" window and parts of it copied to the current grammar.

The "Trace" window may equally be used for storing text. However, it is also used by BP2 for displaying error messages, and sometimes BP2 needs to clear it (with the user's permission).

Clicking the go-away box of the "Trace" window erases its content after prompting the user to save changes.