addr is a reserved keyword in Nim. I know I can just put it in backticks to use it as an identifier or don't use the abbreviation and write address, but that looks rather ugly in my eyes :D. I'm writing an emulator so I deal with variables named like this constantly.
For example for type typ seems to be an established alternative. I guess I could follow this example and use the German word (Adresse) here as well, just shortened to adr or adrs.
I know this all sounds a bit silly, but it annoys me, so if anyone has another idea I would be happy to hear it!