Priority of background objects

[KnownStranger]

What's the point of modify the priority of a background graphic?

[Emral]

You can make them go in front of other things, or further behind them.

[KnownStranger]

Isn't that the "foreground" modification for npcs?

[Emral]

No? The foreground config for NPCs is a boolean which toggles between priorities -15 and -45 for most.
The priority config for BGOs is for BGOS (not NPCs), is a number (not a boolean) and lets you specify the priority freely.
Check the docs for more info.
https://docs.codehaus.moe/#/features/bgo-config
https://docs.codehaus.moe/#/features/npc-config

[KnownStranger]

What I meant in the previous reply was if priority is something like a equivalent to foreground for npcs, not the same thing.

[Emral]

They accomplish the same goal of changing the render priority, but the foreground flag is a lot more limited.