pencilmark

Like pencilmarks on a doorjamb that a parent uses to record a child’s height, you can compare old feedback with new, every six to eighteen months.

To make assurance doubly sure, you put a pencilmark against the name and “day” of your own particular great man.

Then pencilmark the outer edges for a guide. Another way is to drive stakes into the ground and use string guides on all four sides.

Geissler was seated at his glass-topped desk making pencilmarks on a dark gray punched tape. “Come in, John. I didn’t expect you. What’s the matter? You getting this 1753?”

You might do this with pencilmarks and find that 8 and 9 can go only in the two cells marked ‘c. Or you might notice the 8 and 9 in row 8, and the 8 and 9 in row 9, and realize that the 8 and 9 in box 7 have to go in row 7. And if you are really skilled, you might never bother writing any pencilmarks at all.