pds01.pu@startdot digraph pds { label="PDSサイクル"; node [fontsize = 12, shape = box, style=rounded ]; s1 [label="Plan(計画)"]; s2 [label="Do(実行)"]; s3 [label="See(評価・見直し)"]; s1 -> s2 -> s3; s3 -> s1; {rank = same; s2; s3;} } @enddot