First of all, I'd like to apologise that this is in English and not in German, but since the opinion of my german speaking friend that read what I wrote in English and translated via google translator, was that it's a crime against the German language, I decided it will be better if I write in English.
I'm looking for a mod/way to edit game/map file, to be able to use custom icons, like the one here->GlobalCompany Addon Icons | ModHub | Farming Simulator, without having to have Global Company mod. I do vaguely recall seeing some mention about this here, but now I can't dig it up. Can you help me and tell me how I can achieve that please?