constructor construct object rectangl lifelin box stereotyp box fig classifi role head fig fig head stereotyp fig fig stereotyp fig set bound min head width rowheight rowdist stereotyp fig set fill stereotyp fig set line width fig set edit fig set fill fig set line width life line fig fig life line min head width role width min head height link posit add messag node life line fig height sequenc diagram layer link distanc link posit add messag node todo doe load problem add fig big port add fig life line fig add fig head fig todo doe load problem add fig stereotyp fig add fig fig 