Answer 1

Short answer: Supported but not recommended.

Long answer:
While a deprecated software feature remains in the software, its use may raise warning messages recommending alternative practices; deprecated status may also indicate the feature will be removed in the future. Features are deprecated rather than immediately removed, to provide backward compatibility, and to give programmers time to bring affected code into compliance with the new standard.

Source - Wikipedia
https://en.m.wikipedia.org/wiki/Deprecation