Section 2 - List Nondescript items

A last description-priority rule (this is the nondescript items preparation rule):
    now every thing is not marked for listing;
    repeat through the Table of Seen things
    begin;
        if the output entry is unmentioned, change the output entry to marked for listing;
    end repeat;
    if a marked for listing thing is in the location, carry out the listing nondescript items activity with the location.

Rule for listing nondescript items of a room (called target) (this is the nondescript items listing rule):
    say "You can [if something is mentioned]also [end if]see ";
    list the contents of the target, as a sentence, tersely, listing marked items only, including contents and giving brief inventory information;
    say " here."