Had a memory Flash-Back today. The sheet of paper is placed on the base plate into each corner position, in turn. Once set-up, four small prints can be made without moving the base plate. Just lift the black top plate with cut-out. The 'odd size' base plate allows the paper to be moved into each corner, for four prints to be made on one sheet of paper. Quite simple to use.
Get my 2nd Pfizer shot tomorrow Have been having 'Flu shots for ten years. Those who 'Wimp' about jabs, should experience Macular Eye injections. Had those for the last five years.