Cemmgh_bm.rar -

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

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

Archival files like these are frequently used to distribute libraries or component packages for software like MATLAB, specialized PLC (Programmable Logic Controller) software, or civil engineering tools. While the exact "feature" depends on the software