.IP "\fB-z\fP" 10
remove the time prefix from zsh history
.IP "\fB-d\fP" 10
-remove duplicated lines
+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
.IP "\fB-a\fP" 10
.IP "\fB-s <pattern separator>\fP" 10
specify the symbol to separate the substrings in the search pattern
.IP "\fB-x <label separator>\fP" 10
-specify the symbol to separate the label from the rest of the line
+specify the symbol to separate what to show to the user during the
+selection from the rest of the line
.IP "\fB-l <max number of lines>\fP" 10
specify the maximum number of lines to take into account
.IP "\fB-f <input filename>\fP" 10