Currently, Word only supports absolute references to subdocument file
locations. THis is a problem when developing a Master Document off line in a
"development" folder which is moved later to a "Released" folder.

The absolute file referencs force the developer to reinsert the subdocuments
into the Master document after the path has changed to the master document.

Relative references to subdocument file locations would allow the Master
document to be moved (provided all subdocuments in the same directory and
subfolders were moved with it)