A document pick, an apply, or another history operation is in progress; edits are ignored.
Sources are being checked or compiled.
Panel visibility. The addin command opens it; disabling the addin closes it.
Optional project-relative folder imported resources are placed under.
Refreshes linked files, compiles, and applies the result as one undo step.
Picks MML files. Inputs (compile = true) are compiled; the others are only available to #include.
#include
Picks a replacement file for the resource at path.