Here is where you can freely read the whole source code of Paypal's new stablecoin which is named Paypal USD with ticker (symbol) PYUSD: https://etherscan.deth.net/address/0xe17b8adf8e46b15f3f9ab4bb9e3b6e31db09126e#code
Well everything is transparent and some of the more interesting parts are parts where it can clearly freeze and unfreeze people's accounts. Supply is centrally controlled of course via a Supplycontroller, and probably the biggest thing is that it can freeze accounts and then burn the frozen account's coins. If we get CBDCs you can expect this kind of function in them.
Here is that ''interesting'' part of the code which states some of these things if you don't want to look at whole source code: