156 phrase boundaries, and the rectangle one split point asks about

156 phrase boundaries, and the rectangle one split point asks about

Each point is one phrase boundary of a collection of 1,024 characters. Its horizontal position is the boundary's rank when the boundaries are sorted by the text BEFORE them and its vertical position is its rank when they are sorted by the text AFTER them. Splitting the pattern "ss is un" after 4 characters gives a range of 0 boundaries whose preceding text ends with the left half and 0 whose following text begins with the right half; an occurrence crossing a boundary at this split is a point in both, which is a rectangle. 0 of the 156 points are in it, and the filter this collection shipped examines the smaller of the two ranges — 0 of them — to find out which.

Drawn at 700 × 430, wide on the page. Everything above is what grid-rect returns with no arguments; the caption is the generator's own, computed from the numbers in the drawing rather than written beside it.

4 essays call grid-rect. The drawing above is what it returns with no arguments at all; every call below passes it something, because a placement that passes nothing draws whichever member of the family the generator happens to default to rather than the one its essay argues about — which is what optcheck and figfill exist to catch.