remove duplicated lines (note that you can have two different lines
with the same visible part if you use the -x option)
.IP "\fB-e\fP" 10
-start with the regexp mode activated
+start in the regexp mode
.IP "\fB-a\fP" 10
-make the matching case sensitive
+start in the case-sensitive mode
.IP "\fB-q\fP" 10
make a flash instead of a beep when there is an edition error
.IP "\fB--\fP" 10