[Newbies] SelectorBrowser: where is the action of RET stored?

Hi list,

I am trying to learn how to control a SelectorBrowser from code... I discovered that I can run the lines below one by one,

sb := SelectorBrowser prototypicalToolWindow openInWorld. sb explore. (sb submorphs at: 4) editString: 'foo'. (sb submorphs at: 4) editString: 'bar'.

and the "editString:" messages will change the string in the top left pane... I don't know its name yet, so let me call it the "search bar".

What happens when we type RET in the "seach bar" of a SelectorBrowser?

From the user's point of view what happens is that it performs a

search and all other panes are updated, but what happens in a lower level? I spent hours today exploring the SelectorBrowser and a few other related classes, but I could not find (yet) where is the method that converts a RET there to an action, or what is the default method associated to a RET in the search bar...

Thanks in advance, and apologies for my newbieshness =S, Eduardo Ochs http://anggtwu.net/eev-squeak.html