Star Logo Commands

crt; crt 50: Creates 50 turtles at the center of the screen.
fd; fd 16: Moves all the turtles forward 16 steps from where they are standing.
seth; seth 90: Sets all the turtles to be facing east.
pd; pd fd 10: Turtles all put their pens down and draw moving forward 10 steps.
pu; pu fd 75: Turtles all pick their pens up and move forward 75 steps.
ilist; lt 30 fd 15 rt 90: Turtles make a left turn 30 degrees, so they're now facing 60 degrees from north, then they move forward 15 steps, then they make a right turn 90 degrees, so they're facing 120 degrees from north.
repeat; repeat 15: Repeats the commands 15 times.
cg: Clears all graphics and sets all turtles and graphics to the color black.
to; to get fd 20 end: Creates a command called get and the command get moves the turtle foward 20.
end; to get fd 20 lt 45 end: Runs the ilist get then ends the procedure.
ca: Kills all turtles and sets them back to zero. All variables are reset to 0.
ask-turtles; ask-turtles [fd 10]: Asks turtles to move forward 10 steps.

ct: Clears all the turtles on the screen.
set c; set c yellow: Sets all the turtles on the screen to blue.
stamp; fd 10 stamp yellow fd 20: Turtles move forward 10 steps, put their pens down only at that spot to make a dot of yellow, pick their pens up, and move forward 20 steps.
random; fd random 30: Turtles move forward anywhere from 0 to 30 steps.
jump; jump 10: Turtles jump ahead 10 steps 10 times as fast at it would take them to move forward 10 steps with the fd command.
cp: Clears all patches by setting them back to black and setting their variables back to 0.
rt; fd 50 rt 90: Turtles move forward 50 steps and then make a right turn 90 degrees.
lt; lt 60: Turtles make a left turn 60 degrees.
pc: Reports the color of the patch that the turtle standing on.
if; if pc = blue [jump 20]: If the patch the turtle is on is blue, it will jump ahead 20 steps.
stop; if pc = green [stop]: If the patch the turtle is on is green, it will stop.