This indicates a compressed archive file, standard for distributing large mods, custom maps, or software patches. Analysis of the File

In French, clés means "keys." In a gaming or software context, this often refers to activation keys , configuration files , or unlockable assets for a specific map or mod.

Identify which specific game community (e.g., Simulation Ferroviaire ) the map "Alternay" originates from.

While this specific .rar package does not appear in major mainstream software databases, it is characteristic of content found in :