Section 2 - Room Introductions

A room has some text called the introduction. The introduction of a room is usually "".
Definition: a room is introduceable if it is as-yet-unknown and its introduction is not "".

A room can be as-yet-unknown or introduced. A room is usually as-yet-unknown.

The first time looking rule is listed last in the carry out looking rules.

This is the first time looking rule:
    if location is introduceable
    begin;
        introduce the location;
        say paragraph break;
    end if.

Introductions ends here.