BehaviourComposer: ignore everything before this.
Patches like agents can be given attributes.
Begin micro-behaviour
Update patch attribute
Begin NetLogo code:
substitute-text-area-for patch-attribute-name xxx-of-patch substitute-text-area-for patch-value yyy ask-every-patch [set patch-attribute-name patch-value]
End NetLogo code
text
text
text
text
BehaviourComposer: ignore everything after this.