FILT data?

I think it is the Filt optical storage. Probably. Maybe. No clue.

That save actually has three types of "colored things". When you mouseover a particle, its type should appear in the top-right (press 'H' if you don't see it). There's a PHOT stack, where the data is read from, there's FILT/BRAY, which does computations on the data like demultiplexing, and there's deco'ed INSL which is what is actually assembled into the image itself. You've got to be more specific.

FILT: FILT can be found in the solids menu. Use the PROP tool in the tools menu to set its ctype, which is how data is stored. If you write the ctype out in binary, which bits are set determine FILT's color. ARAY reads and processes the data in FILT by transferring it into BRAY, DTEC transfers the data in BRAY back to FILT.

PHOT: In terms of data, it works exactly like BRAY -- set its ctype with PROP. You'll have to also use the PROP tool to set its vx and vy to zero. It's used over BRAY in some cases because it can be layered a lot.

Deco'ed INSL: Press 'B' to toggle the deco menu, which you can use to change the color of things (doesn't need to be INSL). This doesn't actually store data in the particles, since there's no way to extract the deco color of a particle for computation. In that save, a particle ROM is used to convert FILT data into deco'ed INSL, but it's not possible to go the other way.

Read the wiki for more information on how to use each particle.

im trying to make a computer that can do you know... computer stuff

and im trying to make one that also stores information or data for a long time, i want to learn this so 

when a data/information will be needed later it needs to stored...

also please explain it in a way that 3rd grader can understand

(Im NOT a 3rd grader)