Vanilla GTS only gives you and Mercedes‑Benz Actros MP3 (plus the older Axor). Top truck mods add:

Tonight’s haul was a 25-ton shipment of machinery heading from Berlin to a small industrial park on the outskirts of Frankfurt. Usually, this route was predictable, but Klaus had just installed the "Extended Germany Map."

: While the base game covers 18 German cities and later added Austria, mods often add more detailed roads, new cities, or adjust the 1:19 scale for better immersion.

Are you referring to a specific modification called "Paper" or a mod that changes in-game documents/textures?

into the mod folder.