[m-users.] Unclear documentation for multi_map

[Julien Fischer]

Hi Volker,

On Thu, 4 Apr 2024, Volker Wysk wrote:

> The documentation of the multi_map module doesn't say if a value can occur
> more than once for a given key.

True, it doesn't explicitly state it, although the fact that duplicate
values are allowed for a given key is implicit in the fact that each key
has a list of values associated with and lists can contain duplicate
values.  Still, it won't hurt to mention that directly.

Incidentally, if you're using multi_map, you may want have a look at
using one_or_more_map instead.

Julien.