[m-users.] Random supply, mdi and muo

[emacstheviking]

I googled and foind one old posting from 200 about the "rnd" module which
doesn't seem to be alive anymore, it's random.m now isn't it?

I cannot find anything in the documentation about "mdi" and "muo"; I can
see that it's some kind of safeguard against using the same random
generator twice or something but I can't understand the code I am writing
for lack of details!!!

All I seek is
 (a) what is the intent of mdi/muo and
 (b) how to use it correctly!

Many thanks.
Sean.
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