RichViewSaveHyperlinksInDocXAsFields Typed Constant
RichViewSaveHyperlinksInDocXAsFields = False;
This constant switches between two methods of hyperlinks saving in DocX files.
SaveDocX saves hyperlinks as <w:hyperlink>. This way of saving is more compatible, it must be understood by all DocX readers.
Minus: MS Word checks hyperlink targets more strictly, if it contains an invalid URL, it may treat the whole file as erroneous.
SaveDocX saves hyperlinks as HYPERLINK field, similar to RTF.