>Is there a file where these constants are defined so I know what values to use when adding the properties from VFP ?
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You can use the Office Object Browser (in Word, Tools-Macro-Visual Basic Editor, then View-Object Browser to get there) to look up individual constants. In addition, Rick Strahl has a tool that reads a type library and creates #DEFINE definitions for each one it finds. www.west-wind.com, then look for GetConstants.EXE.

Tamar