These are editor commands. You may be more familiar with the key bindings which invoke these commands than the command-names themselves. You will see the name of the command for that binding. You really shouldn't be using complex strokes for editor commands since there are so many possible simple strokes to invent. This means that you don't compromise anything by using strokes-mode .
Strokes knows the difference between a click and a drag.
Customization Strokes uses the customization library written by Per Abrahamsen. This means that you will want to use XEmacs version 19.15 or greater. You can use read all about the different variables which you can configure. It would be wise not to play around too much with most of them unless you understand what they're doing. If you turn it off, then Strokes will not draw your strokes graphically as you enter them in, but will still read them.