This thread will from now on be where I intend to ask any and all of my Metadata questions so all of the answers will be in one place.
Thanks for bearing with me.
To begin, in ExifToolGUI, there are two fields, Exif:XPTitle and Exif:XPSubject; in the Windows "Properties" dialogue, there is a Title and a Subject.
What is the significance of the XP in XPTitle and XPSubject ??
In ExifToolGUI, whatever text I enter in XPSubject shows up in Properties Subject; however, the text I enter in XPTitle does not; in fact, I have no idea where it goes; it just disappears into the outer elements.
There is a field in ExifToolGUI, Exif:ImageDescription; the text I enter here does show up as Title in Properties --- however, if I then add a Comment or IPTC:Caption, it will replace the text in Exif:ImageDescription, but will not affect Properties Title.
I am quite adept at writing Metadata and dodging most of the pitfalls; but, the behavior of the various schools of Metadata do not play well together at all and what one enters in one may write over or eliminate what has already been correctly entered somewhere else.
With all the technology of today, why does not someone fix all of this confusion once and for all --- not by creating another method to just confuse the issue further, but make the terminology make sense and mean what it says and not mess with fields one has already written via some other method ?
and programs ---, many will either clip the entered text in the saved file at about the fifth word, or erase it completely; if one does not catch this behavior and replace the corrupted data, it is lost forever.

