Mine weren't boards and they weren't erasable. For all of Prometrics self righteous hypocrisy regarding their 'rules' and 'standards' they sure give themselves a lot of slack.
I was given a fine tipped felt point marker black ('fine' is relative, it wasn't as fine as a thick ball point) and 2 8.5x11 inch laminated sheets, front and back at a time. I had to go outside and trade in both for a new 2 when I used up all the room. I must have made the trip a dozen times all told. Some of them had a grid, which I requested not be given to me when I took the RC because it was going to be distracting. I don't think I used the grid for hole punching, either because the squares were the size of approx. standard graph paper and I had prepped by hand drawing mine so I stuck to the hand drawing of my grids.