Isn't it just the adverb form of "superp"?

Ah, grammar humor...

Here's this, though, from http://www.rfpco.com/plywood/superply.htm :

SuperPly is an exterior, sanded plywood panel. The faces are specially selected veneers, which are light in color and have little distinction between sapwood, heartwood and growth rings, resulting in a smooth, uniform appearance. Minor splits, indents, and wormholes are putty filled. SuperPly meets or exceeds all veneer grade, adhesive, construction, and workmanship requirements of PS 1-95. All Roseburg manufactured plywood is inspected and certified by APA, a nationally and internationally recognized and accepted testing organization.

Highlights:

* No wood patches
* Ultra-smooth sanded faces
* Tight-grained faces
* Inhibit checking
* Fewer and smaller internal voids

3  out of 4 found this valuable. Do you find this valuable? Do you?