I can only tell you that I have been able to do it. <g> I don't ordinarily
see them because I don't display All Files, but I have opened them and
examined them at least once.
A few more tidbits from experimentation...
The "save" temporary files indeed are the "d" files, I could see them
come and go when I made the test documents large enough.
The "l" files are indeed clipboard files. It took a while to force
Word to create one though. It appears that Word keeps the clipboard
files in memory until it runs out of space, and then pushes some of
them (maybe the oldest?) out into disk files.
All of these files were in the document directory; I don't know why
Word sometimes puts them in Application Data...
By the way: in the process of experimenting with this I had Word
working on two documents at once, each over 50M characters. One was
over 63MB, the other over 67MB. Word seemed to be doing just fine.
Then I also opened the ~wrlxxxx.tmp file that it was probably still
using, and it was still OK. Then I asked it to display the Clipboard
task pane. That put it into a "not responding" loop long enough for me
to lose patience and kill it. Recovery worked just fine; both of the
gigantic files came back.
I guess Word XP is fairly robust in some ways...
Bob S