Bookmarks are named shortcuts for search queries. They allow using a
convenient name for often-used queries. The bookmarks are also visible as
shortcuts in the mu experimental user interfaces, mug and mug2.
mu supports bookmarks stored in a file called bookmarks in the mu
home directory (typically, this would be ~/.mu/bookmarks).
The bookmarks file is a typical key=value .ini-file, which is best shown
by means of an example:
inbox=maildir:/inbox # inbox
oldhat=maildir:/archive subject:hat # archived with subject containing hat
The [mu] group header is required.
For practical uses of bookmarks, see mu-find(1).