Cemmgh_bm.rar -

While the exact "feature" depends on the software it belongs to, files with similar naming conventions typically provide the following:

If you found this file on your system or a shared drive, you can determine its specific feature by:

In some developer communities, these specific alphanumeric filenames are used for resource packs or updates to niche technical tools.

The "BM" suffix often refers to Building Management or Building Models . In this context, the archive usually contains configuration files, firmware, or structural data for automated systems.

Look at the folder or website where it was downloaded; the parent directory often names the software.