iMessage Sticker Pack development question

Hi all… I am working on redeploying a sticker pack and doing the build myself. I am looking through the development guidelines and saw this:

You can choose to specify in what apps your Sticker packs should be available through the keyboard by updating your Info.plist file. You can either restrict your stickers to just messages or make it available throughout the system.

What does “info.plist” mean?

Thanks in advance!

Hi there!
The Info. plist file contains critical information about the configuration of an iOS mobile app —such as iOS versions that are supported and device compatibility—which the operating system uses to interact with the app. This file is automatically created when the mobile app is compiled.