Include turtle instructions

[ianb]

The turtle operations don't seem to be documented in Reference at all. I think a page specifically for those instructions would be useful, ideally with images. Examples:

FD 100
RT 90 ; maybe display [FD 20 RT 90] so that you get a sense of where it was pointing and where it ended up?
LT 45
BK 100
SETCOLOR "BLUE ; display [SETCOLOR "BLUE FD 100]
PENWIDTH 5 ; with FD displayed

There's probably some drawing commands I'm missing. I've been doing some turtle drawing with my daughter, and this would be helpful. Showing a diagram of degrees might also be helpful (with 30, 45, 60, and 90 being specifically interesting). Also units of length.

[inexorabletash]

In Reference, this is section 6 "Graphics", which documents everything that's supported (I think? I don't believe anything is missing...), with (trivial) examples for each:

http://calormen.com/jslogo/language.html#sec6

Was that not showing up for some reason?

It also starts off with a link to a primer on turtle geometry (not mine). But no disagreement that this could be improved.

[inexorabletash]

Also, if you want to write (or collaborate...) on an "intro to logo" document, that could be fun.

[inexorabletash]

We could use https://github.com/inexorabletash/jslogo/wiki for more detailed documentation.

[ianb]

I realized I didn't see the instructions because it's labelled "Graphics" and somehow that just didn't register as the Turtle commands. GitHub is somewhat interesting because I do like how easy it is to paste in images, which makes it easy to copy in screenshots.

I've also been thinking about just making something printable, since there's a screen real estate issue. I might start by just doing it by hand and see what questions my daughter has.

There's a couple Kindle books on Amazon I've considered getting to see how they do stuff.