t$ = pdf.GetMetaText(id, attr$)
id. This
PDF document must have been opened using pdf.OpenDocument(). The attr$ argument
specifies which text to get. This must be a string and can be set to the following
values:
Title:Author:Subject:Keywords:CreatorProducer:CreationDateModDate:Note that meta texts aren't always set. If there is no meta text for the specified attribute, an empty string is returned.