The removal of something superfluous or dispensable by, or as if by cutting, as something that is (or is intended to be) cut off or eliminated; especially the outer edges of a page of a book, magazine, or the like, before folding or binding. The permissible variations set by ISO for trim tolerance is 1.5mm for dimensions up to 150mm, 2mm for dimensions above 150mm up to 600mm, and 3mm for dimensions above 600mm; and DIN trim variations are 1mm, 1.5mm, and 2mm respectively for the same range of dimensions. The ISO standards for slightly larger formats of untrimmed raw paper are defined by the series "RA" and "SRA". See choke, creep, crop, crop marks, deckle edge, cutoff, cut flush, cast off, hairline, draw, finish, post-press, guillotine cutter.