Meaning of PC, TC, PC, DA, RA - Maple Story Alt + F12

I tried to search, but I couldn't find out what those letters means.

First one (FS) most probably stands from Frames per Second. What about the rest? Does anyone have an idea?

PC=Price Check

FS could actually be Face Stompers.

FS is a common WZ variable to refer to physics when sliding on the ground (friction speed).

Context for the questions would really help, since two letter ones get used a lot.

The title suggest he's talking about that black box which shows up in the top right hand corner of the game at times. (Alt F12 induced?)

In that case PC could be Ping Count. I don't mess with the screen modes enough to pay attention to what it's displaying up there the few times I've enabled it by accident.

press, alt+f12, there is a box that appears on the top right, these are the letters he is talking about.

Well its been a long time since i pressed alt + f12 and now i don't seem to get that box to pop up. I know it use to popup some kind of diagnostic box.

Context for the questions would really help, since two letter ones get used a lot.

In my personal opinion the context is more than clear, we're in technical section.

FS is a common WZ variable to refer to physics when sliding on the ground (friction speed).

Thanks for answer Fiel, do you have an idea what the rest means?

In my personal opinion the context is more than clear, we're in technical section.

Yes, we're in a technical section and you asked for the meaning of multiple 2 letter abbreviations, of which there could've been thousands of answers in technical meaning alone without factoring in maplestory itself without explaining where you were seeing them. PC can be everything from price check to player character for example before we even hit the technical jargon like ping count. FS could've been anything from frames per second to fail-safe.

Context is important because regardless of how well you understand what you're asking, you're not asking yourself, you're asking the rest of the world.