All Chemistry

xcor

a built-in turtle reporter that stores the x-coordinate of the turtle

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sprout, sprout-<breeds>

a command that takes a number and sometimes a set of commands as input and creates that number of new turtles (or turtles of a specific breed) with random colors […]

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pycor

a built-in patch variable that stores the y-coordinate of the patch

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heading

a built-in turtle variable that reports the direction that the turtle is facing

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size

a built-in turtle variable that reports the size of the turtle

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neighbors4

a reporter that reports the set of four surrounding patches

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report

a command takes a value as input, terminates the current to-report procedure, and reports the input value as the result of that procedure

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to-report … end

keywords that begin and end reporter procedures

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xcor

sprout, sprout-<breeds>

pycor

heading

size

neighbors4

report

to-report … end

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