[TYPO3-ect] Using 'action' in lib/div

[R. van Twisk]

hey Guys,


I am making a plugin with a lot of different functions (gallery, press 
releases, awards etc etc etc)

I basicly have two questions


1) I want to have for each functionality a different desgination.
Is it correct to say that I need to set it in my controller like this? : 
$this -> setDefaultDesignator('press_releases');


2) I have read about 'actions' But looking at eFaq it shows a lot of 
'magic'. So my question is,
what is a action and how can I use it? I 'think' I can use a action to 
execute
a different function based on form input. However I am not totally sure.




thanks,
Ries