+.IP "\fB-i\fP" 10
+inverse the order of the lines
+.IP "\fB-b\fP" 10
+remove the numeric prefix from bash history
+.IP "\fB-z\fP" 10
+remove the time prefix from zsh history
+.IP "\fB-r\fP" 10
+remove duplicated lines
+.IP "\fB-c <fg modeline> <bg modeline> <fg highlight> <bg highlight>\fP" 10
+select the modline and highlight color numbers