Auto-complete is a time saver.
Typing a portion of a command followed by [Tab] will cause Quotile to complete as much of the command as possible.
For example:
Typing "co" then pressing [Tab] will auto-complete to "copy".
Pressing [Tab] again will show all possible command starting with "copy".
Typing "copyc" followed by [Tab] will yield "copycolumn".
Pressing [Tab] on an empty command line will display all available commands.