4213 Missing spaces in man pages

@@ -30,29 +30,29 @@
 .ne 2
 .na
 \fB\fB====1\fR\fR
 .ad
 .RS 9n
-\fIfilename1\fRis different
+\fIfilename1\fR is different
 .RE
 
 .sp
 .ne 2
 .na
 \fB\fB====2\fR\fR
 .ad
 .RS 9n
-\fIfilename2\fRis different
+\fIfilename2\fR is different
 .RE
 
 .sp
 .ne 2
 .na
 \fB\fB====3\fR\fR
 .ad
 .RS 9n
-\fIfilename3\fRis different
+\fIfilename3\fR is different
 .RE
 
 .sp
 .LP
 The type of change suffered in converting a given range of a given file to some