a built-in turtle variable that reports the direction that the turtle is facing
a built-in turtle variable that reports the size of the turtle
a reporter that reports the set of four surrounding patches
a command takes a value as input, terminates the current to-report procedure, and reports the input value as the result of that procedure
keywords that begin and end reporter procedures
a reporter that takes a number and either a set of agents or a list as input and reports a randomly chosen set of agents or items the size of […]
a reporter that takes a set of agents and a number as input and reports a new set of agents containing only the agents from the original set that are […]
a reporter that takes a set of agents as input and reports the same set of agents except without the agent calling the reporter
