Finding a subset is easy.
Go to the find tab and perform a search that should match multiple records. E.g. if you have any varchar fields a search for simply "a" will match any record containing the letter "a".
As far as inreasing the limit, you could do this. I believe it is in the Dataface/ResultController.php file. Just search for "100" and at some point you should see the spot.
-Steve
