For those curious: It's somewhat documented if you read between the lines that the "secret APIs" that everyone was afraid of were really things like string mana

For those curious: It's somewhat documented if you read between the lines that the "secret APIs" that everyone was afraid of were really things like string management and what-have-you in a shared library among many different Microsoft products. Meanwhile, Apple has a habit of hiding functionality behind a lot of obscure API calls that aren't documented and require special entitlements to call.