instead of perl's case where something may be singular or plural; let everything be plural as in 'rc' or inferno's 'sh'; singular is just a special case of plural.  And there should be 'wrap' and 'unwrap' functions to make plurals singular and vice-versa (like collective nouns, referring to a group as a single entity).

We can always use ordered lists to store these plurals.  If the order is not
needed, it may be ignored.  If indexing or directory (index/dictionary/hash)
function is required, the lists may be indexed somehow.

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