This version is now capable of nesting the new [ and ] 'repetitions' repeat instructions. It does not support the old R 'repetitions' and E instructions!
Instruction description:
C FLOAT (C is a char, FLOAT is a float)
Combinations
F distance (move turtle forward by 'distance', print line if pencil is down)
T angle (turn turtle by 'angle' (positive angle counterclockwise))
U (move pencil up)
D (move pencil down)
[ (start of loop)
] repetition (end of loop, jumps to last '[' for 'repetition' times)
{ (remember coordinates and angle)
} (goto remembered coordinates and angle)
NOT SUPPORTED ANYMORE
R repetition (repeat following operation until E operator 'repetition' times)
E (marks end of repetition block)