I have found that the mods to nsuser.ini don't seem to matter, and I have completely deleted all of the above entries (and the others I tried) with no ill effects on SciTE.  

Instead, I found my best results -- and a solution -- by adding to the nsapps.ini file as follows:

[SciTE]
App Support GUID={dd100104-6205-11cf-ae61-0000e8a28647}

[SciTE\Enable Class Names]
Scintilla=5

I believe that the original setting was Scintilla=1, but with trial and error, the above setting of 5 lets me Select-and-Say not just recently dictated text, but all text in the viewport.  

Only problem I noticed is if you have the "Enable multiple text matches" setting checked and you try to select a word that has multiple instances, you won't get the little numbers allowing you to choose which one, and it will look like nothing has happened.  If you uncheck that option, you can select the word, and if it is the wrong instrance, just say "select again" as is the usual way to deal with this when that setting is unchecked.

More info is here (but is dated back to DNS 7 and 8):

http://nuance.custhelp.com/app/answers/detail/a_id/3765/~/enabling-full-select-and-say-capability-in-other-applications-for-dragon

But this is great news for me.  Hope it helps some of you voice coders, too . . .

PG

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