begin
text t1 20 40 "a stack with five data elements" blue 20
stack s1 150 150 5 push pop stack on top darkgreen violet
end
delay 900
delete t1
delay 500

text t2 20 40 "pop is called on the stack removing the word 'push'" red 20
delay 900
pop s1
delay 800
delete t2
delay 500

text t3 20 40 "the word 'first' is now added to the top of the stack using push" blue 20
delay 800
push s1 "first"
delay 900
delete t3
delay 500

text t4 20 40 "another stack is created with 3 data elements" red 20
delay 400
stack s2 220 150 3 ABC "Do Re Mi Fa So La Ti Do" 123 violet darkgreen
delay 1000
delete t4
delay 500

text t5 20 40 "Two pops are called on the second stack leaving only '123'" blue 20
delay 800
pop s2 
delay 900
pop s2
delay 800
delete t5
delay 500

text t6 20 40 "the color of the text is changed to darkorange in the first stack using changeParam" red 16
delay 600
changeParam s1 textcolor darkorange
delay 500
delete t6
delay 800

text t7 10 40 "the color of the outline in the second stack is changed to cyan using changeParam" blue 16
delay 600 
changeParam s2 color cyan
delay 600
delete t7
delay 500

text t8 10 40 "the first stacked is moved down 50 and to the left 30 using moveRelative" red 16
delay 700
moveRelative s1 -30 50
delay 700
delete t8
delay 500

begin
text t9 30 40 "the two stacks are grouped together" blue 18
text t10 30 60 "thier textcolors are changed to deeppink" blue 18
text t11 30 80 "they are moved 40 down and 40 to the right" blue 18
end
delay 600
groupObject s 2 s1 s2
changeParam s textcolor deeppink
delay 800
moveRelative s 40 40
delay 600 
begin
delete t9
delete t10
delete t11
end
delay 600

text stop 40 500 "END OF DEMO" black 30