I read the dash as a minus sign.“Sea” minus “More Seas” equals “Desert.”~Clock minus “Prospect’s half” equals the “o” of “halo.”~Each vowel is a buttonhole.I practicethe buttonhole stitch.Make one loop over the edge.Gently pull the thread to secure the knot.~“Trees” minus “distant Light” equals “Traveller on a Hill.”~I am that elderly woman buttoning her coat.Her hands tremble, and each buttonis like a stone she’s tryingto push through wool.~“Health” minus “Safety, and the Sky” equals “Exile.”~As if the Sea should part / And show a further Sea—As if the calendar should part/ And show a further calendar—~To find the blue region, first find the big squareand then subtract the little square.