If you want to design and build large-scale industrial plant infrastructure like pressure vessels, piping, pumps, turbines, etc., most of the codes and standards you have to meet cost money to even see -and they are NOT cheap (in the tens of thousands of dollars for a full set).
In several jurisdictions, the standards are incorporated into law by reference. Most people think that you should have free access to read the text of the law that you're beholden to, but what happens when a copyrighted work is incorporated into the law?
archive.org asserted the law should be free to access. However, they lost a copyright lawsuit brought by the American society of mechanical engineers because they were hosting copies of these standards.
So, to read the law you are beholden to in this sector of manufacturing, you must either pay a private organization ($$$) or memorize it (impossible); you cannot make copies for yourself to reference at your leisure
When I detailed cars at a used car dealership for a living, I had a wheel made of the same rubber you find in erasers on the end of an air powered die grinder. It was soft enough to not affect the clear coat, but it was fantastic at removing commercial vehicle decals / stickers / numbers along with the adhesive!