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+.sp 2
+.NH
+History & Acknowledgements
+.nh
+.sp 2
+.ft B
+History
+.ft R
+.sp
+.LP
+The purpose of this project was to make a Pascal compiler which should satisfy
+the conditions of the ISO standard. The task was considerably simplified,
+because parts of the Modula-2 compiler were used. This gave the advantage of
+increasing the uniformity of the compilers in ACK.
+.br
+While developing the compiler, a number of errors were detected in the Modula-2
+compiler, EM utility modules and the old Pascal compiler.
+
+.sp 2
+.ft B
+Acknowledgements
+.ft R
+.sp
+.LP
+During the development of the compiler, valuable support was received from
+a number of persons. In this regard we owe a debt of gratitude to
+Fred van Beek, Casper Capel, Rob Dekker, Frank Engel, Jos\('e Gouweleeuw
+and Sonja Keijzer (Jut and Jul !!), Herold Kroon, Martin van Nieuwkerk,
+Sjaak Schouten, Eric Valk, and Didan Westra.
+.br
+Special thanks are reserved for Dick Grune, who introduced us to the field of
+Compiler Design and who helped testing the compiler. Ceriel Jacobs, who
+developed LLgen and the Modula-2 compiler of ACK. Finally we would like to
+thank Erik Baalbergen, who had the supervision on this entire project and
+gave us many valuable suggestions.
+.bp