--- groff_diff.7-orig	2004-07-11 12:23:40.740841536 -0400
+++ groff_diff.7	2004-07-11 12:24:00.012911736 -0400
@@ -3329,7 +3329,7 @@
 provides a
 .B compatibility mode
 that allows to process roff code written for classical
-.troff
+.B troff
 or for other implementations of roff in a consistent way.
 .
 .P