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Changes between Initial Version and Version 1 of Ticket #53285, comment 2

initial	v1
1	1	In some cases such as features merged from Gutenberg, a feature-specific function may not exist to use `function_exists`.
2	2
3		By providing a feature compat constant, plugins can then detect and not load code for tat feature(s).
	3	By providing a feature compat constant, plugins can then detect and not load code for that feature(s).
4	4
5	5	Adding a version number to the feature compat allows the feature plugin to continue feature development by overriding what's in core and loading its code instead. This would mean that the files/code in core when merged would need to check against this feature compat before loading the files/code into memory.