Numerical Matrix Format
User Reference
WORKSPACE (WRK)

The workspace file is considered a "cooked database" which is optimized and contains everything (all graphical objects, layers, nets, attributes, settings, and more).

Note
Workspace files (*.wrk) are fully compatible with these leading software tools: FAB 3000, ACE Translator 3000, CAM Library, PCB Preflight and Free Desktop Viewer.

Important: Serialize saves the entire design environment to a Workspace file (*.wrk), and Deserialize opens and restores the design environment.

Here's the available Serialization arrays: