--- a/preface.roff	Wed May 09 15:19:30 2012 +0200
+++ b/preface.roff	Wed May 09 15:50:40 2012 +0200
@@ -10,7 +10,7 @@
 to modernize, stream-line and to exploit the concepts
 even more thoroughly.
 
-.U2 "The Path to this Thesis
+.U2 "Background to this Thesis
 .P
 I have discovered nmh in September 2009. At that time I used to use the
 mail client mutt, like many command line-attracted Unix users do.
@@ -96,7 +96,7 @@
 Nmh would hardly be hurt by my work as I would not interfere with
 them. But nmh would profit from my experiences.
 
-.U2 "Focus and Delimitation of the Document
+.U2 "Focus of this Document
 .P
 This document describes my work on the experimental version, named
 \fImmh\fP. It explains the changes I did to nmh, with having the focus
@@ -111,25 +111,25 @@
 thoughts on style, mainly based to the Unix philosophy, are present
 throughout the discussions.
 .P
-This document is written for the community \(en developers and users \(en
-around MH-like mail systems.
+This document is written for the community around MH-like mail systems
+\(en developers and users.
 First of all, the document shall propagade the design goals and
 implementation decisions of mmh. But as well, it shall clarify my
-perception of the
-concepts of MH and Unix, and the therefrom resulting point of view.
-Further more, the document shall explain this view on nmh and mmh.
-Despite the focus on MH-like systems, this document can be useful
+personal perception of the
+concepts of MH and Unix, and explain the therefrom resulting point of view.
+Despite the focus on MH-like systems, this document can be worthwhile
 to anyone interested in the Unix philosophy, as well as anyone
-involved in old software projects, be it code-related or community-related.
+involved in old software projects, be it code or community-related.
 .P
-The reader is expected to know Unix, C and email well. Good Unix shell
+The reader is expected to have good knowledge of Unix, C and emailing.
+Good Unix shell
 knowledge, including shell scripting, is required. MH relies fundamentally
 on the shell. Without the power of the shell, MH becomes a motorbike
-without winding roads.
+without winding roads: boring.
 Introductions to Unix and its shell can be found in XXX.
 The reader is
 expected to be familiar with the C programming language, although the
-document should be quite readable without knowledge of C, too.
+document should be understandable without knowledge of C, too.
 The book by Kernighan and Ritchie is the definitive guide to C.
 Some book about system-level C programming is worthwile additional
 literature. Rochkind and Curry have written such books.
@@ -143,6 +143,17 @@
 concrete is the literature by Kernighan and Pike XXX.
 The term paper ``Why the Unix Philosophy still matters'' by myself
 provides an overview on the topic, including a case study of MH.
+Although a brief introduction to MH is provided in Chapter 1, the reader
+is encouraged to have a look at the \fIMH Book\fP by Jerry Peek.
+It is the definitive guide to MH and nmh.
+The current version is available freely on the Internet XXX.
+.P
+This document is neither a user's tutorial to mmh nor an introduction
+to any of the topics covered. It contains discussions on Unix, email
+and system design on an advanced level.
+However, as knowledge of the fundamental concepts is the most valuable
+information over some program or software system a user can aquire,
+this document might be worth a read for non-developers too.
 
 
 .U2 "Organization
@@ -171,6 +182,7 @@
 
 .\" End or Preface. Start of the normal text.
 .\" Switch to arabic page numbers and start on a right page.
+.
 .if e \{
 .	pn 1
 .	af PN 1