title "Repeated Development Steps in Software Life Cycle"
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boxwid = 2
boxht = 2
req: box color blue text "Requirements""Analysis"
arrow color yellow
sys1: box color blue text "System""Design"
arrow color yellow
prog1: box color blue text "Program""Design"
arrow color yellow
prog2: box color blue text "Program""Implementation"
arrow color yellow
unit: box color blue text "Unit and""Integration""Testing"
arrow color yellow
sys2: box color blue text "System""Testing"
arrow color yellow
sys3: box color blue text "System""Delivery"
arrow color yellow
main: box color blue text "Maintenance"
arc -> cw color yellow from main.left to sys3.left
arc -> cw color yellow from main.left to sys2.left arcradius 7i
arc -> cw color yellow from main.left to unit.left arcradius 9i
arc -> cw color yellow from main.left to prog2.left arcradius 11i
arc -> cw color yellow from main.left to prog1.left arcradius 13i
arc -> cw color yellow from main.left to sys1.left arcradius 15i
arc -> cw color yellow from main.left to req.left arcradius 17i
arc -> ccw dashed color yellow from sys2.right to sys1.right arcradius 15i  
arc -> ccw dashed color yellow from sys2.right to req.right arcradius 17i text "Report""Discrepancies" 
arc -> ccw dashed  color yellow from sys2.right to unit.right text "Fix errors and""Retest" 
arc -> ccw dashed color yellow from unit.right to prog2.right text "Modify""Code"
arc -> ccw dashed color yellow from prog2.right to prog1.right text "Revise Program""Design"
arc -> ccw dashed color yellow from prog1.right to sys1.right text "Revise System""Design"
arc -> ccw dashed color yellow from sys1.right to req.right text "Redefine""Requirements"