You're mostly talking to technical authors here rather than
developers. What's a COM server?
The only way I can think of doing it is this as there is no
way within RH.
See the topic on my site about opening RH projects.
Essentially the idea is to trash the CPD and XPJ files. Use part of
the HHP file and work on that with regular expressions or whatever
other method you want. Then reopen the project using the HHP file.
I've never tried it, it is just a theory. Do back up.
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