Blocks

A block is a list of commands that are executed in the order they appear:

[COMMAND1 COMMAND2 COMMAND3 ... ]

Blocks appear in many contexts:

ask AGENTS [COMMAND1 COMMAND2 COMMAND3 ... ]

hatch N [COMMAND1 COMMAND2 COMMAND3 ... ]

if CONDITION [COMMAND1 COMMAND2 COMMAND3 ... ]

while [CONDITION] [COMMAND1 COMMAND2 COMMAND3 ... ]

We may also consider the body of a procedure or reporter to be a block:

to do-something
COMMAND1 COMMAND2 COMMAND3 ...
end

Blocks can be nested inside of blocks. Things can get complicated. For example:

ask turtle 0
[
ask turtle 5
[
draw-square
ask turtle 3
[
draw-circle
]
draw-hexagon
]
draw-triangle
]

To keep things straight, we need to understand the asking stack.