Until he cracks his head on the.... floor-based material that is.

Eheheh! I put a string of characters like that on all commissioned artwork. Each section details things that affect the price of a picture. I made this a long time ago. It's mostly for my convenience, but commissioners can use the program if they want to quickly see exactly how much a picture costed and why.

BIG'OL BREAKDOWN BECAUSE BOREDOM
D- If it says D, it's digital. If it says T, it's traditional.

CHI- three letters for the type of commission- this case meaning chibi (QSK meaning quicksketch, LCS meaning "lined cel-shading", etc etc).

nCS- The part that says "n" will say "r" if it's a ref sheet and "b" if it's a badge. Then there are two letters that normally say what style it's in (T/G/R for toony/general/realism + 1-10 realism-scale number, usually G6), but here say "CS" because it's a cel-shaded chibi and that was the best place to put it.

nbC1- "nb" means "no background/no-cost background". It will say "sb" if it's simple and quick, "cb" if it's average (for semi-complex) and "db" if it's really rendered (high-detail). The section with C1 just says how many characters there are. C1 means 1 character; C2 means two and so on. C0 is ten. When it gets above ten, the second number starts going alphabetical (CA=11).

nuF- "nu" means "no upgrades" but that's a very outdated idea. The idea was that if someone commissioned a sketch and upgraded it to a full-colour that this would reflect exactly what they paid, but that's not convenient for someone who just wants to see what the whole picture costs. So I'm currently considering it to mean "null" and an extra place to put things if I need to. As for F, it means "fullbody"- B means bust, and I means icon.

na- "na" means no-addons. It's always na except in the case of a ref sheet, where it will instead reflect the price of any non-included extras. It's also used for speedpaints to reflect how many hours it took, e.g. "7h".

SO MUCH TEXT I APOLOGIZE BUT YEAH THAT'S WHAT IT'S FOR.
I more often use the code and program to quickly generate quotes for people based on what they're asking for, rather than to figure out how much someone paid for existing things. I put it under pictures so commissioners have the second option. Once the program's updated I'll be posting the link to it again.