-Keys corresponding to ASCII codes between ' ' and '~' add a character
-to the pattern string. The Delete key, Backspace key, ^D and ^H delete
-one character from the pattern string.
+Selector is also a handy tool to test regexps, or to display menus
+with many possible choices. For the latter, the -x option allows to
+specify a label delimiter: the part of each line before that character
+will appear during the selection, but only the part after that
+character will be returned.
+
+Note that because this is an interactive command, the standard input
+can not be used as one of the input files.
+
+.SH "KEY BINDINGS"
+
+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.