# Reference Guide

This appendix has five main sections. The first section is a chart of the MH 6.8.3 commands covered in this book. It lists each command's switches and parameters (with defaults in bold face), refers you to the book section about each one, and gives a brief explanation. It's an easy way to find examples and descriptions of specific MH commands.

The MH section doesn't cover features, like POP support and BBoards, that aren't covered in this book. Your online mh-chart(1) manual page was customized for the options set when MH was installed on your system. Use it to find other online manual pages you might want to read.

If you aren't using MH 6.8.3, some commands and options will be different. To get a similar listing online for your version of MH, you can type -help to any MH command.

The other sections are:

- xmh Reference Guide, which lists xmh menus, buttonboxes, and text editing commands.
- exmh Reference Guide, which covers exmh options, buttons, and key bindings.
- The last section is for MIME users. Its first table, which applies to MH, MH-E, and exmh, lists some MIME content types and subtypes. The second table lists MIME draft directives; this is handy for MH, MH-E, and exmh users who are composing MIME messages. However, MH-E users are more likely to use the commands described in Section Adding Attachments of The MH-E Manual to insert MML (MIME Meta Language) tags.

The chapter introductions in The MH-E Manual serve as a reference guide for MH-E.