How to dump content of dropbox like this?

Marcos's icon

I'm curious how he dumped the contents of the drop box like this? I usually use a umenu, but that displays one line at a time. I would like to do something like this, with automatic scroll bars if the # of items are more than can be visually displayed...this is for my music visualizer which uses a playlist of songs etc...

I downloaded the patch and tried looking at the code, but it seems that particular part he embedded as a bpatcher and I can't access it?

Luke Hall's icon

Look at [jit.cellblock] it's in the standard max distribution.

lh