套件： mh-book (200605-1)
MH & nmh: Email for Users & Programmers online book
This is the book written by Jerry Peek and published by O'Reilly & Associates, Inc. This book covers MH, nmh, and several interfaces to MH including xmh and exmh. MH-E is now documented separately.
This manual is also visible at http://rand-mh.sourceforge.net/book/