Most MS documents can be controlled and linked to SolidWorks PDM, as per the following instructions.
- In PDM Administration Tools –> Variables node, define PDM variable (Description)

- Define PDM variable New Attribute (CustomProperty)
- Define Block name (CustomProperty)
- Define Attribute Name (Description)
- Link to file extension (Doc, Docx,…etc.)

- Link Variable to data Card

- DataCard should Support File extensions