Overlays Magic

Hi, Bernard, could you please tell me how to create a new overlay? I want to have an overlay 'flowers' additional to those 'recipie' and 'poll'. I wrote a module 'flowers.php' and placed it into 'overlays' section and it is now seen there by the server ('..overlays available poll recipe flowers'). How do I make pages to use that overlay? Just typing 'flowers' into an overlay field does not help, it creates a generic pages without form field encoded in 'flowers.php'. What should I do? Thank you in advance. BTW,you server loads and serve pages almost twice as fast as e107 and ~30% faster than drupal and AngelineCMS (that a new one, rudimental but fast). This is cool.