>Many of these (I think today it's called automation server, but Microsoft
>changes names constantly) provide events. Word for example when you open or
>close a document, Internet Explorer when a download has been completed, a new
>page is activated, etc. But currently you can't write code into these events.
>
>The DLL lets you specify a procedure that is called when such an event occurs
>and thereby allows you to react on these events.

Ok, I think I see... so, it's a mechanism to support callbacks? Or is that yet another thing?