To truly appreciate version 101a, let's build a complete program: a fractal tree. This uses recursion, randomness, and pen control.
Open the editor (EDIT "TREE) and type:
TO TREE :SIZE
IF :SIZE < 5 [STOP]
FD :SIZE
RT 30
TREE :SIZE * 0.7
LT 60
TREE :SIZE * 0.7
RT 30
BK :SIZE
END
Now, CLEAN, PU BK 150 PD, and type TREE 100. You will watch a symmetric tree grow before your eyes. This is the top demonstration of recursion for any classroom. pc logo for windows version 101a download 11 top
Create hypnotic art with one line:
REPEAT 360 [FORWARD 2 RIGHT 1] To truly appreciate version 101a , let's build
Before diving into the download process, let’s decode the keyword. Now, CLEAN , PU BK 150 PD , and type TREE 100
Why 101a? Version 101a is famous for its stability. Unlike earlier DOS-based versions, it supported mouse input, fonts, and multi-tasking within Windows. It is lightweight (often under 5MB), runs entirely in 16-bit or 32-bit compatibility mode, and contains no bloatware.
Earlier versions had one turtle. Version 101a introduced multiple turtles:
MAKE "TURTLE2 TURTLENEW ; Creates a second turtle
TELL 2 ; Speak to turtle #2
SETPOS [-100 -100] ; Move it to bottom-left
TELL [1 2] ; Control both turtles simultaneously