There are a lot and in most cases you’ll notice when dealing with Americans, who are refusing to do stuff like the rest of the world. The meter and kilogram took over from hundreds of different measurement standards. Most of the world is using the same calendar and writes dates in the same way. Most countries are driving on the same side. Traffic signs are kind of the same worldwide. You can buy screws with the same standard everywhere.

It’s actually quite simple - not sure how it does work under the hood, but take a look at your documents. Every insurance, employer or company has its own letterhead with logo, contact information and legalese. You just tell paperless on one document “hey, that is my insurance, please tag everything like this as insurance” and it will do that.