Your code review

Basic Commands

• fd(x) , forward(x)

  Moves the turtle x points

• back (x) , bk(x)

  The turtle back x points

• left(x) , lt(x)

  Rotate the turtle left x degrees

• right(x) , rt(x)

  Rotate the turtle left x degrees

• clearscreen, cs

  Will clear the screen and return the turtle home

Controlling the Pen

• penup , pu

  The turtle will not leave a trail

• pendown , pd

  The turtle will leave a trail

• setwaittime (x) , swt (x)

  Will set the waiting time to x milliseconds

• wait

  Will cause the turtle to wait before executing the command

• setwidth (x)

  Will set the pen width to X

• hideturtle , ht

  Hide the turtle

• showturtle , st

  Show the turtle

• home

  Moves the turtle to center, pointing upwards

• setx (num) , sety (num)

  Move turtle to the specified location

• setxy (num1,num2)

  Move turtle to the specified location

• setheading (x) , seth (x)

  Rotate the turtle to the specified heading

• arc (ANGLE, RADIUS)

  Will create an arc distance RADIUS covering ANGLE angle

• ellipse (Width , Height)

  Will craete an ellipse width Width and height Height

• pos , xcor , ycor

  Outputs the current turtle position as [ x y ], x or y respectively

• heading

  Outputs the current turtle heading

• towards

  Outputs the heading towards the specified [ x y ] coordinates

Loops and procedure

• repeat x [ statements ... ]

  Repeat statements x times

• repcount

  Outputs the current iteration number of the current repeat or forever

• for controllist [ statements ...]

  Typical for loop. The controllist specifies three or four members: the local varname, start value, limit value, and optional step size

• to PROCNAME inputs ... statements ... end

  Define a new named procedure with optional inputs

• make varname expr

  Update a variable or define a new global variable. The variable name must be quoted, e.g. make 'foo 5

• : VARNAME

  access the content of VARNAME

Lists

• list thing1 thing2 ...

  Create a new list from the inputs

• first listname

  Outputs the first item from the list

• butfirst listname , bf listname

  Outputs all the items of listname except for the first item

• last listname

  Outputs the last item from the list

• butlast listname

  Outputs all the items of listname except for the last item

• item index list

  Outputs the indexlist item of the list or array

• pick listname

  Outputs one item from a list, at random

Colors

• setcolor (x)

  Will set the turtle color according to the following table

  0: black	1: blue	2: green
  3: cyan	4: red	5: magenta
  6: yellow	7: white	8: brown
  9: tan	10: green	11: aqua
  12: salmon	13: purple	14: orange
  15: gray

• setcolor [r,g,b]

  Will set the turtle color according to the amount of red , green and blue for example setcolor [50 100 50]

• fill

  Does a paint bucket flood fill at the turtle's position

• filled fillcolor [ statements ... ]

  Execute statements without drawing but keeping track of turtle movements. When complete, fill the region traced by the turtle with fillcolor and outline the region with the current pen style

Math

• sum x y

  sum x y

• minus x y

  return the distance between x and y

• random (x)

  Will choose a random number between 0 - (x-1)

• modulo expr expr

  Outputs the remainder (modulus). For remainder and % the result has the same sign as the first input; for modulo the result has the same sign as a the second input.

Your functions