--- a/preface.roff	Mon Jul 16 00:37:31 2012 +0200
+++ b/preface.roff	Mon Jul 16 00:42:13 2012 +0200
@@ -267,4 +267,72 @@
 
 .U2 "Acknowledgments
 .P
-.\"so thanks
+Prof. Dr. Schweiggert and Dr. Borchert, you made my work
+possible with your believe in the relevance of this topic.
+I enjoyed my time studying in Ulm in the environment around you.
+For me, this had been just the right place to be.
+You have enriched my studies greatly and
+I have learned a lot from you both.
+Thank you.
+.sp
+.P
+This thesis is my own work, but it would be in much poorer shape
+without the help of friends.
+They spotted errors, bad explanations, weak argumentations,
+and clumsy sentences.
+Their comments and suggestions shaped this document;
+they made it focused and comprehensive.
+.P
+The lady comes first, but not for that reason alone.
+
+.IP "Katja Rogers
+Your help concerning the English language and writing in general
+was outstanding.
+The reader will surely recognize the sentences I have never showed to you.
+
+.IP "Dominik Lang
+You were mmh's first user.
+That was great!
+Thanks for your feedback and suggestions regarding mmh,
+as well as for your improvements of this document.
+
+.IP "Michael M\[udieresis]ller
+Thanks for your corrections, comments,
+and for the discussions on typography.
+
+.IP "Matthias Matousek
+Thanks for your corrections, comments,
+and for sharing your ``living room''.
+
+.IP "Boris Kraut
+Thanks for your corrections, comments,
+and for the idea to use an adjusted mmh setup as an address book.
+
+.IP "Aaron M\[udieresis]ller
+You have surprised me by proposing yourself to being a proof reader.
+Thanks for your valuable annotations and quick responses.
+
+.IP "Marius Gl\[odieresis]ggler and Martina Schnalke
+You have covered the tedious tasks of double-checking the
+changeset references and the bibliography, respectively.
+Thank you.
+
+.sp
+.LP
+My family supported me in times when I was busy;
+Jean-Luc Picard and his crew took me on diverting
+space adventures in my lazy times.
+
+.sp
+.P
+Yet, none of the aforementioned people is connected to my work
+in the same way Lydi is.
+All those days in Argentina when I was working long hours and
+even on holidays instead of spending time with you.
+All the explanations of always the same doubts and difficulties
+I suffered from, and you just listened.
+All the delays near the end of my work though you have wished for
+an earlier finish. \(em
+In spite of it all, you knew what it meant to me.
+.P
+Danke f\[udieresis]r dein Verst\[adieresis]ndnis.