ArenaLocObject

Good afternoon. Could someone explain what these files are responsible for, and tell me how to work with them and change their values? I would be very grateful.

Files with the (ArenaLocObject) extension at the end are responsible for the visual placement of objects on battle arenas.
The line of interest is "placement," which contains a set of letters and symbols that determine the object's position and rotation.
Question: How can I obtain this code if I want to place an object with a specific rotation on the arena (in my case, a city arena)?
I would appreciate any help.

P.S. Standard codes for towers, gates, and walls, as well as mines, do not work - the object rotations do not match.