X-Force was a prominent reverse engineering team known for creating keygens (key generators) for various software, including Autodesk's entire suite (AutoCAD, Revit, Maya, 3ds Max). Their 2013 release was particularly popular because it coincided with a stable version of AutoCAD that many users still consider the "golden era" of drafting software.

is not an Autodesk command. It refers to a crack group that bypasses AutoCAD 2013's license activation. Using cracked software is:

The Hidden Costs of Software Piracy: Security Risks and Economic Impact on Professional Design Industries. : Research how cracked tools often bundle malware (e.g., HackTool:Win32/Keygen

If you are currently using a cracked version of AutoCAD 2013 (via X-Force) and you want to go legit without losing your workflow, follow this migration plan: