Paul F. writes:
in the meantime, any objections if i add this new section to
mh-folders.man, or something like it?
nmh folders can be given arbitrary names, with one exception:
folders should not be given all-numeric names. This limitation
results from nmh messages themselves being stored in numerically
named files -- allowing folders to be named similarly would make
nmh slower, and introduce usage ambiguities.
There's some old discussion of this starting with
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