What's this UI pattern called?

Question

I\'m trying to figure out what this sort of thing is called, and eventually how I can create one in a web browser. It looks like this (screenshot of the first app that came

Answer 1

It's really a glorified multi select list. Since there is only 2 states "included" (selected) "excluded" (not selected). There is a pretty nice multi select widget that splits the selected and not selected items in to 2 columns and lets you drag and drop between then two:

http://www.quasipartikel.at/multiselect/