-The main usage of selector is as a super shell-history. With the
-correct option, it will inject the selected line into the virtual tty
-input buffer, hence allowing the user to edit the line and execute it
-as a standard command.
+The main usage of selector is as an efficient search in the shell
+command history. With the correct option, it will inject the selected
+line into the virtual tty input buffer, hence allowing the user to
+edit the line and execute it as a standard command.
+
+Selector is also a good tool to test regexps, or a way to display
+menus. The -x option allows to specify a label delimiter: the part of
+each line before that character will appear during the selection, and
+the part after that character will be returned.
+
+.SH "KEYS"
+.PP
+
+Keys corresponding to ASCII codes between " " and "~" add a character
+to the pattern string. The Backspace key, "^H" and "^?" delete the
+character immediately on the left of the cursor, while the Delete key
+and "^D" delete the character at cursor location.
+
+The Left and Right cursor keys move the editing cursor
+accordingly. The Up and Down cursor keys move the selected line one
+entry at a time, and PageUp and PageDown move it by ten entries. The
+Home and End key move to the top and the bottom of the list
+respectively. The return key selects the current line and exits.
+
+The keys "^A", "^E", "^U", and "^K" do somehow what they do in
+readline, and you can exit selector without doing anything by either
+interrupting the command with "^C" or by typing "^G" or the Escape
+key.
+
+The key "^R" switches between the multi-substring and the regexp
+selection mode, and "^I" between the case-sensitive and
+case-insensitive modes.