# HG changeset patch
# User meillo@marmaro.de
# Date 1269505866 -3600
# Node ID 0caa9760fca8b0d2afeedb3132d318c4d0c348c2
# Parent  ec17b3a969c7c81bc0f4763093c046f038f7a926
wrote summary of ch04

diff -r ec17b3a969c7 -r 0caa9760fca8 unix-phil.ms
--- a/unix-phil.ms	Wed Mar 24 22:07:02 2010 +0100
+++ b/unix-phil.ms	Thu Mar 25 09:31:06 2010 +0100
@@ -1079,7 +1079,29 @@
 .NH 2
 Summary \s-1MH\s0
 .LP
-flexibility, no redundancy, use the shell
+\s-1MH\s0 is an \s-1MUA\s0 that follows the Unix Philosophy in its design
+and implementation.
+It consists of a toolchest of small tools, each of them does one job well.
+The tools are orthogonal to each other, to a large extend.
+However, for historical reasons, there also exist distinct tools
+that cover the same task.
+.PP
+The toolchest approach offers great flexibility to the user.
+He can use the complete power of the Unix shell with \s-1MH\s0.
+This makes \s-1MH\s0 a very powerful mail system.
+Extending and customizing \s-1MH\s0 is easy and encouraged, too.
+.PP
+Apart from the user's perspective, \s-1MH\s0 is development-friendly.
+Its overall design follows clear rules.
+The single tools do only one job, thus they are easy to understand,
+easy to write, and good to maintain.
+They are all independent and do not interfere with the others.
+Automated testing of their function is a straight forward task.
+.PP
+It is sad, that \s-1MH\s0's differentness is its largest problem,
+as its differentness is also its largest advantage.
+Unfortunately, for most people their habits are stronger
+than the attraction of the clear design and the power, \s-1MH\s0 offers.