white pen/pencil?

That would be a grease pencil, also called china marker. You can get them at any office supply store and I even picked one up at Wallyworld once.

-- Dan-- Info for all @ http://www.hoistman.com

We use the Wite-Out pens when cutting granite, should work on wood as well.
http://www.wite-out.com/pens/

-- Thuan

There is an actual white artists pencil that sharpens like a regular pencil. Artist supply carries them.

-- Easy Peasy Lemon Squeezy-May all your dovetails fit tight and right the first time

I use mine to mark darker woods like walnut. Its much easier to see than the standard #2.

-- My job is to give my kids things to discuss with their therapist....medic20447@gmail.com

You can also buy them at a fabric store

-- Jim from Heirloom Woodshop, custom furniture ,maker, woodworking school, heirloomwoodshop.com