How do you mean??
Are you refering to being able to produce a short text/intro text, and user then clicks a linktoread further.
If so, then the [Break] button found in the article editor is your solution. Simply place cursor where you want the intro to end, press [Break] and save.
If this is not what you were refering to, then could you please try to explain a bit further...
Or maybe one of our Duth typers (um... speakers) may step in to help.