Expand %var% variables - this option allow expand variables in the text properties (like Caption and Text). Desired variable should be quoted with two % sign.
Example: Info for user %user% will be expanded to "Info for user " & $user
OnEvent mode - when this option enabled, code generator will produce event code (*SetOnEvent functions and corresponding functions code) instead message loop.
Generate events for all controls - this will generate variables for every control, despite it's settings.