Hello, I want to reproduce this figure. ​ In the example below, it seemed to me that he had to write dir(180-angle(1,0.5)), but not. \starttext \startMPcode path p ; p := (3.5cm,-1.5cm)--(0cm,0.25cm)--1.2cm*dir(180-angle(1,0.5)) ; draw p dashed evenly withcolor 0.625white; draw p reflectedabout ((3.75cm,-1.5cm),(3.75cm,1.5cm)) dashed evenly withcolor 0.625white ; draw (-1cm,-1.5cm)--(8.5cm,-1.5cm)--(8.5cm,0.9cm)--(-1cm,0.9cm)--cycle withcolor 0.625white ; for i=0 upto 14 : draw unitsquare scaled 0.5cm shifted(i/2*cm,0*cm) ; endfor ; for i=0 upto 10 : draw unitsquare scaled 0.5cm shifted((i+2)/2*cm,-1/2*cm) ; endfor ; for i=0 upto 6 : draw unitsquare scaled 0.5cm shifted((i+4)/2*cm,-1*cm) ; endfor ; for i=0 upto 2 : draw unitsquare scaled 0.5cm shifted((i+6)/2*cm,-3/2*cm) ; endfor ; \stopMPcode \stoptext Thank you.