Depending on the version, you will either install a pre-patched CLEO APK or move internal files.
Allows you to mark any location on your map and warp there instantly, bypassing long transit times across San Andreas.
I will cite relevant sources, including the CLEO Wiki page for details on CLEO's functionality and compatibility issues, and the GTA Fandom page for version compatibility. I will also mention the need for a downgrade patch.