I can’t find any info on what this is meant to do, does anyone know?
bump?!
Some types of plugins, mostly dynamic libraries (.so on Android, .dll on Windows, and .dylib and .framework on Apple platforms), are traditionally loaded only whenever they are first needed. Loading binaries has overhead and could lead to unwanted hiccups. This (I assume, because I find no official docs to back me up) is to let Unity load the library at startup, before your code needs it, so your code can just call into it without waiting for the library load system call, which should be similar to “Preloaded Assets” in Player Setting.
bump, still undocumented
Should be here : Unity - Manual: Import and configure plug-ins
Still undocumented. I’m going to send a message through there.
Is now documented: Unity - Manual: Import and configure plug-ins