File:Collapsestack.jpg|Collapse a 'stack' of blocks to save space
File:Collapsestack.jpg|Collapse a 'stack' of blocks to save space
File:Pushpop.jpg|Store data in the first in last out heap using 'push' and 'pop'
File:Pushpop.jpg|Store data in the first in last out heap using 'push' and 'pop'
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File:Turtlearray.jpg|Box names can be boxes, in this case 10 boxes are created. This is a powerful programming feature. A one dimensional array of variables has been effectively created.
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File:Turtlearray.jpg|Box names (and stack names) can be boxes, in this case 10 boxes are created. This is a powerful programming feature. A one dimensional array of variables has been effectively created.