remove duplicated lines
.IP "\fB-e\fP" 10
start with the regexp mode activated
-.IP "\fB-e\fP" 10
+.IP "\fB-a\fP" 10
make the matching case sensitive
.IP "\fB-c <fg modeline> <bg modeline> <fg highlight> <bg highlight>\fP" 10
select the modeline and highlight color numbers