What are partitions and such? Never heard of that.

Ya, I think everyone kinda covered it. The main way probably is to just use the picture variables though, as JosJuice said, they are 767 bytes each and you can't do a whole lot with them unless you constantly store and restore to them since they take up the "whole" screen (I said "whole" because the screen is technically 96*64 pixels but since it's TI-BASIC it only uses the 95*63 pixels). The other way of doing pictures/images/sprites is to hard code or "hard code" them in using the drawing commands (Line(, Pxl-On(, Pt-Off(, etc.). Then there are ways of making sprites by using Text Sprites, which is clever way of using the Text( command, and there are also Dual Layers too, which is using both the Text( and picture variables cleverly to achieve good graphics (there are topics on both of these around Omnimaga). Then, technically, as nemo said you can use hexadecimal code to make sprites and such but in TI-BASIC, at least Pure TI-BASIC, it is quite slow. I have created a sprite editor that lets you create a sprite/image and then export it into hexadecimal code and nemo has that program that converts it back. Finally, if you're experienced enough to use Hybrid TI-BASIC, you can get much faster sprites and such using those and all, though I don't know much about those so I can't help much. Hope this helps.

So would I be correct in assuming your ticalc.org account used to be under the name Sven Thomas? I recognized the programs you mentioned you made and remembered looking at them. I was thinking about using some of them but never got around to it and never had the experience required too. Welcome to Omnimaga

well, each key on the calc keyboard has a bit assigned to it which is set when pressed and reset when not pressed. however, it doesnt really have it's own because(i guess?) it would take too long for the processor to go through and check a bit for every single key every time it want's to know what keys are pressed down and so the keys are instead broken into several keygroups. the processor then has to indicate which keygroup it wants to check and then which bit it want's to check. for some reason, certain combinations of keys will return the value of others when they are pressed because of this? i would have to read up on this again as the last time i did was over a year ago. thepenguin or any of the other asm programmers could actually explain it.
the purpose of this program is to display graphically what keys the processor is reading as being pressed down, which can then be compared with what keys are actually being pressed to ensure that a certain key combo that may be used in your game wont trigger another key that does something completely different.

Ah ok, gotcha. Guess I just don't really use Axe/assembly enough to really run into this issue.

Here is yunhua98's without the double first frame. It just looked odd to me so I thought I would see what it looked like.

ClrHome
Menu("CHOOSE FORMULA","CIRCLE AREA",1,"SPHERE VOL.",2,"CYLINDER VOL.",3,"CONE VOL.",4,"QUADR PYR VOL.",5
Lbl 1
Prompt R
Output(4,2,"AREA IS:
Output(5,2,πR²
Stop
Lbl 2
Prompt R
Output(4,2,"VOLUME IS:
Output(5,2,4/3πR³
Stop
Lbl 3
Prompt R,H
Output(4,2,"VOLUME IS:
Output(5,2,HπR²
Stop
Lbl 4
Prompt R,H
Output(4,2,"VOLUME IS:
Output(5,2,R²πH/3
Stop
Lbl 5
Prompt L,H
Output(4,2,"VOLUME IS:
Output(5,2,L²H/3
Or if you wanna see what nemo was talking about:

ClrHome
5
Menu("CHOOSE FORMULA","CIRCLE AREA",1,"SPHERE VOL.",2,"CYLINDER VOL.",3,"CONE VOL.",4,"QUADR PYR VOL.",5
Lbl 1
Ans-1
Lbl 2
Ans-1
Lbl 3
Ans-1
Lbl 4
Ans-1
Lbl 5
Ans-1→J
If not(Ans
Prompt R
Output(4,2,"AREA IS:
Output(5,2,πR²
If J=1
Prompt R
Output(4,2,"VOLUME IS:
Output(5,2,4/3πR³
If J=2
Prompt R,H
Output(4,2,"VOLUME IS:
Output(5,2,HπR²
J=3
Prompt R,H
Output(4,2,"VOLUME IS:
Output(5,2,R²πH/3
J=4
Prompt L,H
Output(4,2,"VOLUME IS:
Output(5,2,L²H/3
I haven't checked that to make sure it works but it should. Happy Birthday, hope ya have a good one.

I think the only thing that can be on the graphscreen is the title screen and a main menu, otherwise everything else must be on the homescreen. That's how I understood it anyways.