Logo- Language Of The 80s, Byte Magazine Volume 7, Number 4, April 1982

My school taught us this. It was more or less basic with a cursor that you could move around to draw.

I thought I used a similar thing, thinking it was called 'turtle'. Turns out the graphics engine is called turtle.

It was pretty cool, you could do elementary fractals with it.

So, for Logo, do people have to buy it as a software, or it is free ?