STARLOGO COMMANDS:

COMMAND	EXPLANATION	EXAMPLE
BK, BACKWARD number	Turtle moves backward the number of steps	BK 5
CRT, CREATE-TURTLES number	Creates the number of turtles	CRT 1
CT, CLEAR-TURTLES	Clears or kills all of the turtles	CT
FD, FORWARD number	Turtle moves forward the number of steps	FD 5
HT, HIDETURTLE	Designated turtles are hidden	HT
IF condition [list of commands]	If the condition returns true then the list of commands is executed	IF COLOR = PINK [FD 10]
IFELSE condition [list of commands1] [list of commands2]	If the condition returns true then do the list of commands in list of commands1 otherwise if the condition returns false do the list of commands in commands2	IFELSE COLOR = LIME [FD 5] [BK 5]
JUMP number	Turtle jumps forward the number of steps	JUMP 10
LT, LEFT	Turtle turns left the number of degrees	LT 90
PD, PENDOWN	Turtle puts down its pen and draws when FD or BK are used	PD
PENDOWN?	Returns true if pen is down and false if pen is up.	IF PENDOWN? SETC PINK
PENUP?	Returns true if pen is up and false if pen is down	IF PENUP? SETC LIME
PU, PENUP	Turtle picks up its pen so it don longer draws when it moves	PU
REPEAT number [list of commands]	Do or execute the list of commands the times called for in number	REPEAT 4 [FD 10 RT 90]
RT, RIGHT number	Turtle turns right the number of degrees	RT 90
SETC, SETCOLOR color name (or color number can also be used here)	Sets the color for a turtle	SETC PINK (Pink is also 135)
SHOWN?	Returns true if the turtle is currently showing otherwise returns false	IF SHOWN? [FD 5]
ST, SHOWTURTLE	Hidden turtles become visible	ST
Supported colors	BLACK, BLUE, BROWN, CYAN, GRAY, GREEN, LIME, MAGENTA, ORANGE, PINK, RED, SKY TURQUOISE, WHITE, YELLOW