The design of 26 signal flags is used in two sewn booklets, with a random choice of the three basic colours, the RISO duplicator was operated as a copy machine and tried to recreate the same layout twice, 23 x 17 cm, 1/2 26 not numbered pages, 2/2 28 not numbered pages, signed ed/66, two booklets in a sleeve, Maastricht 2020