Index: roff.7
===================================================================
RCS file: /usr/vhosts/mdocml.bsd.lv/cvs/mdocml/roff.7,v
retrieving revision 1.34
diff -u -r1.34 roff.7
--- roff.7	6 Nov 2011 14:43:14 -0000	1.34
+++ roff.7	13 Nov 2011 21:44:50 -0000
@@ -945,14 +945,21 @@
 .%U http://heirloom.sourceforge.net/doctools/troff.pdf
 .Re
 .Sh HISTORY
-The RUNOFF typesetting system was written in PL/1 for the CTSS
-operating system by Jerome ("Jerry") E. Saltzer in 1961.
-It was first used as the main documentation tool by Multics since 1963.
-Robert ("Bob") H. Morris ported it to the GE-635 and called it
+The RUNOFF typesetting system, whose input forms the basis for
 .Nm ,
-Doug McIlroy rewrote it in BCPL in 1969,
-Joseph F. Ossanna rewrote it in PDP-11 assembly in 1973,
-and Brian W. Kernighan rewrote it in C in 1975.
+was written for the CTSS operating system by Jerome E. Saltzer in 1964.
+Doug McIlroy rewrote it in 1969, renaming it roff.
+Dennis M. Ritchie rewrote McIlroy's utility for
+.At v1 .
+Joseph F. Ossanna improved roff and renamed it nroff
+for
+.At v2 ,
+then ported nroff to the C-language as troff, which Brian W.\&
+Kernighan released with
+.At v7 .
+Kernighan's implementation forms the basis for most modern
+.Nm
+implementations and their input.
 .Sh AUTHORS
 .An -nosplit
 This