A certain amount of help is available via the Help menu. The command Illustrated Web Manual starts a browser with this reference manual. The command Command Names brings up a series of menus which provide descriptions of all Redet commands.
There are a list of key bindings and lists of Unicode Ranges and Unicode General Character Properties, for use in programs that provide notation for character classes based on Unicode ranges and character property equivalence classes. There are also basic information about the program (About), a summary of its capabilities (Description), a copy of the license (License), and information about submitting bug reports (Bug Reports).