I know this isn't what most would consider a "codebase" but at a college job doing mostly CNC programming I had to troubleshoot problems with startup and mainte

I know this isn't what most would consider a "codebase" but at a college job doing mostly CNC programming I had to troubleshoot problems with startup and maintenance G Code for a 2.5 axis CNC machine that the owners didn't want to pay to have the manufacturer consult on (smart move). The kicker was it was entirely documented in Italian. It took a lot of meticulous documentation and patience. It was honestly a great learning experience in terms of both reading code and thinking through all of the outcomes of a change you made (considering a mistake could have damaged the machine).