1.1 --- a/preface.roff	Tue May 15 19:21:27 2012 +0200
     1.2 +++ b/preface.roff	Tue May 15 21:30:21 2012 +0200
     1.3 @@ -133,14 +133,30 @@
     1.4  on the shell. Without the power of the shell, MH becomes a motorbike
     1.5  without winding roads: boring.
     1.6  Introductions to Unix and its shell can be found in ``The UNIX Programming
     1.7 -Environment'' by Kernighan and Pike or ``The UNIX System'' by Bourne.
     1.8 +Environment'' by Kernighan and Pike
     1.9 +.[
    1.10 +kernighan pike unix prog env
    1.11 +.]
    1.12 +or ``The UNIX System'' by Bourne.
    1.13 +.[
    1.14 +bourne unix system
    1.15 +.]
    1.16  The reader is
    1.17  expected to be familiar with the C programming language, although the
    1.18  document should be understandable without knowledge of C, too.
    1.19 -``The C Programming Language'' by Kernighan and Ritchie is the
    1.20 -definitive guide to C.
    1.21 +``The C Programming Language'' by Kernighan and Ritchie
    1.22 +.[
    1.23 +kernighan ritchie c prog lang
    1.24 +.]
    1.25 +is the definitive guide to C.
    1.26  Some book about system-level C programming is worthwile additional
    1.27  literature. Rochkind and Curry have written such books.
    1.28 +.[
    1.29 +rochkind advanced unix prog
    1.30 +.]
    1.31 +.[
    1.32 +curry system prog
    1.33 +.]
    1.34  As large parts of the code are old, old books are likely more helpful
    1.35  to understanding.
    1.36  The format of email messages as well as the structure of email transfer
    1.37 @@ -190,7 +206,6 @@
    1.38  Which font for what use.
    1.39  Meaning of `foo(1)'.
    1.40  RFCs.
    1.41 -MH vs. nmh vs. mmh.
    1.42  .P
    1.43  This thesis is devided into XXX chapters, ...
    1.44  .P