This identifies the file as a Roshal Archive , a proprietary compressed format. Technical Functionality

The extraction process must always be started from the first volume. The software automatically looks for the remaining parts to complete the reconstruction. Common Use Cases

This specific versioning and naming style is frequently seen in:

This represents the specific build or version of the software. Version numbers like this often follow Semantic Versioning (Major.Minor.Patch) combined with a specific Build Number (10826), used by developers to track incremental internal changes.

Software like WinRAR , 7-Zip , or The Unarchiver is required to "join" the parts back into the original single file.

Large media files or software "repacks" use split archives to reduce the risk of corruption; if one part fails, only that segment needs to be re-downloaded rather than the entire multi-gigabyte file.

Precise build numbers help IT departments ensure consistency across workstations.

Every subsequent file in the sequence (e.g., .part2.rar , .part3.rar ) must be present in the same folder.