TaskPaper mode is a major mode for working with files in TaskPaper format. The format was invented by Jesse Grosjean and named after his TaskPaper macOS app , which is a system for organizing your outlines and tasks in a text file. TaskPaper mode is implemented on top of Outline mode. Visibility cycling and structure editing help to work with the outline structure. Special commands also provided for outline-aware filtering, tags manipulation, sorting, refiling, and archiving of items.