#let Y-SPACE = 10 #let PAR-SPACE = 10 #let COMMENT-PAD = 8 #let LIFELINE-W = 10 #let SYM-GAP = 5 #let PAR-PAD = (5pt, 3pt) #let ACTOR-WIDTH = 20 #let BOUNDARY-HEIGHT = 20 #let CONTROL-HEIGHT = 20 #let ENTITY-HEIGHT = 20 #let DATABASE-WIDTH = 24 #let COLLECTIONS-PAD = (5pt, 3pt) #let COLLECTIONS-DX = 3 #let COLLECTIONS-DY = 3 #let QUEUE-PAD = (5pt, 3pt) #let COL-DESTRUCTION = rgb("#A80238")