PDFDocument.Keywords
From Xojo Documentation
Property (As String )
aPDFDocument.Keywords = newStringValue
or
StringValue = aPDFDocument.Keywords
New in 2020r1
Supported for all project types and targets.
or
StringValue = aPDFDocument.Keywords
New in 2020r1
Supported for all project types and targets.
The keywords that best indicate the contents of the document. This is stored in the document's metadata to make it possible to find the document with search utilities.