THINGS THAT LIVE AT THIS PLACE (what they are, not where they go): the
list above names what permanently belongs to this site. Where each one
sits in this frame is decided by the attached sketch alone — do not add
or reposition anything on the strength of the list, build only what the
sketch already has lines for, and do not invent facilities that are not
listed.

No readable writing anywhere: surfaces that would carry writing may be
present, but stage any wording out of legibility — an oblique angle,
distance, shallow focus. No captions, watermarks or overlay text,
and none of the sketch's diagram symbols, lines or markers anywhere in
the image.