begin
node 1 120 30 20 20 1 "1" black lightGray black CIRCLE
node 2 70 120 20 20 1 "2" black lightGray black CIRCLE
node 3 170 120 20 20 1 "3" black lightGray black CIRCLE
node 4 120 200 20 20 1 "4" black lightGray black CIRCLE
node 5 220 200 20 20 1 "5" black lightGray black CIRCLE
node 6 170 250 20 20 1 "6" black lightGray black CIRCLE
node 7 20 200 20 20 1 "7" black lightGray black CIRCLE
node 8 70 250 20 20 1 "8" black lightGray black CIRCLE
end

connectNodes a 2 1 black 0
connectNodes b 3 1 black 0
connectNodes c 4 3 black 0
connectNodes d 5 3 black 0
connectNodes e 5 4 black 0
connectNodes f 5 6 black 0
connectNodes g 6 4 black 0
connectNodes h 7 8 black 0
connectNodes i 8 4 black 0

connectNodes 9 1 3 black 1
connectNodes 10 1 2 black 1
connectNodes 11 3 4 black 1
connectNodes 12 3 5 black 1
connectNodes 13 4 5 black 1
connectNodes 14 4 2 black 1
connectNodes 15 4 8 black 1
connectNodes 16 7 2 black 1       
connectNodes 17 4 6 black 1
connectNodes 18 6 5 black 1
connectNodes 19 8 7 black 1

text pre 250 30 "Preorder: " black
text post 250 60 "Postorder: " black
stack s 300 150 0 black red
text ts 260 150 "Stack:" black

marker 20 1 10 black red
push s 1
changeParam 1 bkgrd green
text t1 315 30 "1" green
moveMarker 20 2
text t2 330 30 "2" green
push s 2
changeParam 2 bkgrd blue
pop s
text t3 315 60 "2" blue
moveMarker 20 1 
moveMarker 20 3 
changeParam 3 bkgrd green
text t4 345 30 "3" green
push s 3
moveMarker 20 4  
changeParam 4 bkgrd green
text t5 360 30 "4" green
push s 4
moveMarker 20 8 
changeParam 8 bkgrd green
text t6 375 30 "8" green
push s 8
moveMarker 20 7  
text t7 390 30 "7" green
push s 7
changeParam 7 bkgrd blue
pop s
text t20 330 60 "7" blue
moveMarker 20 8 
changeParam 8 bkgrd blue
pop s
text t8 345 60 "8" blue
moveMarker 20 4 
moveMarker 20 6 
changeParam 6 bkgrd green
push s 6
text t9 405 30 "6" green
moveMarker 20 5 
text t15 420 30 "5" green
push s 5
changeParam 5 bkgrd blue
pop s
text t10 360 60 "5" blue
moveMarker 20 6
changeParam 6 bkgrd blue
pop s
text t11 375 60 "6" blue
moveMarker 20 4
changeParam 4 bkgrd blue
pop s
text t12 390 60 "4" blue
moveMarker 20 3 
changeParam 3 bkgrd blue
pop s
text t13 405 60 "3" blue              
moveMarker 20 1 
changeParam 1 bkgrd blue
pop s
text t14 420 60 "1" blue              
delete 20