...
layer5 sets the current layer to "grit-pipe"
layer6 freezes "grit-elbow"
layer6
Pipe4
Pipe5
Pipe6
Rotate10
Pipe7
...
Pipe9
zoom1
Pipe10and11
layer7 Creates a blue 'grit-riser' layer.
layer8 Freezes the 'gritpipe' layer.
Riser1*
Riser234
layer9 Creates a purple 'grit-cross' layer.
layer10 Freezes the 'grit-riser' layer
cross
Rotate12
Rotate13
layer11 Thaws the 'grit-elbow' layer.
layer12
layer13 Freezes the 'grit-cross' layer.
elbow4
Rotate14
Rotate15
elbow5
elbow67
layer14 Creates a new blue 'grit-tee' layer
layer15 Freezes the 'grit-elbow' layer.
Tee1
move
Tee2
Rotate16
Rotate17
layer16 Creates a new grey 'grit-tank' layer.
Tank
layer17
layer18 Freezes the 'grit-tank' layer
layer19 Freezes the 'grit-tee' layer
one
two
three
test
return stack