Used by the routine at DRAW_CELLS.

The first half of drawing the things in one cell of the town (the drawing order at DRAW_CELLS calls it for every cell whose things are drawn, and SORT_AND_DRAW_THINGS follows it). Every object record from KNIGHT to the end of the records whose graphic is not 0 and whose column and row -- the high bytes of U and V, +2 and +4 -- are this cell's has its address put on DRAW_LIST, which a zero word then ends.

The cell comes in the drawing order's terms, which are turned round with the town (TURN_CELL), and the records keep the town's own; TURN_CELL is its own inverse, so it turns the cell back. Nothing counts the entries: the list has room for fifteen, and the most measured in the simulator, at 1748 stops here over thirty random cells of play, was four.