Cleaned and re-uploaded using the Render Pick DAT vs the Render Pick CHOP.
Render Pick DAT lets you pick many points at one time, like for multi-touch interfaces. You feed it a DAT with minimum 3 columns: "select", "u" and "v", with row 1+ being what you would get from a Panel CHOP's "select", "u" and "v" channels.
The render1 TOP (or a post-processed variant of it) is used as the background of a Container component. We're getting the u, v, select from that container and passing it to the Render Pick DAT. It reports what you have clicked on. Bring up /slushy in a floating panel and watch the output of the Render Pick DAT as you click on the panel.
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