TurtleLeft- Turn the turtle to the left

Instruction that turns the turtle by R degrees to the left.

- TurtleLeft(R)

Parameters:

- (float) R: Degrees of rotation to the left.

Description:

Use the TurtleLeft instruction to turn the turtle of R degrees to the left. The R value can be a negative number, in which case the turtle will be turned to the right. The TurtleR constant contains the current orientation value.