Section: Adding one-time text elsewhere in a room description

This is hardly the only place where we might want to add special text to a room description, but most other places are easier to add to using existing entry points. For instance, if we wanted

    You catch a whiff of almonds as you splash downstream... <-- this is the new text

    Pipe Crossing
    This is a meeting of several pipes: one leads abruptly down and to the north, while gently upward-sloping pipes lead southeast and southwest. A cold and murky white liquid flows from both southern pipes into the northern one.

    A licorice gum drop has been caught by one of the seams of metal, doubtless the only reason it has not been swept away by the current.

we would instead write

    After going to Pipe Crossing:
        if Pipe Crossing is not visited, say "You catch a whiff of almonds as you splash downstream.";
        continue the action.

Or if we wanted that one-time text to appear just before or after the main room description paragraph, like this

    Pipe Crossing
    The smell of almonds is overpowering when you enter. <-- this is the one-time text

    This is a meeting of several pipes: one leads abruptly down and to the north, while gently upward-sloping pipes lead southeast and southwest. A cold and murky white liquid flows from both southern pipes into the northern one.

we might write

    The description of Pipe Crossing is "[if unvisited]The smell of almonds is overpowering when you enter. [paragraph break][end if]This is a meeting of several pipes: one leads abruptly down and to the north, while gently upward-sloping pipes lead southeast and southwest. A cold and murky white liquid flows from both southern pipes into the northern one."

or similarly

    Pipe Crossing
    This is a meeting of several pipes: one leads abruptly down and to the north, while gently upward-sloping pipes lead southeast and southwest. A cold and murky white liquid flows from both southern pipes into the northern one.

    The smell of almonds is overpowering when you enter. <-- this is the one-time text

we might write

    The description of Pipe Crossing is "This is a meeting of several pipes: one leads abruptly down and to the north, while gently upward-sloping pipes lead southeast and southwest. A cold and murky white liquid flows from both southern pipes into the northern one.[if unvisited][paragraph break]The smell of almonds is overpowering when you enter. [end if]"