The plastic recorded which way the window faced

A small notice, sealed flat in plastic, printed square on the chest.

The sheet inside has gone gold down the left side and along the top. The colour runs out on a diagonal, fading until the lower right corner is close to white.

One line survives in bold, dead centre: DO NOT PROP THIS OPEN.

Near the top right, under the seal, one bubble is trapped where it was pressed in.

Lamination promises to keep a page the same forever. This is what forever actually recorded — where the window in the room was.

Why has the sheet gone gold instead of just fading paler?

Because the discolouration isn't only the paper's — the plastic sealing it is contributing colour of its own.

A page left loose in the sun fades: the ink weakens, the white dulls, but it stays roughly the colour it started as. Sealed under plastic, years of the same light do something extra, turning the laminate itself warm, so the whole sheet drifts toward gold rather than simply toward pale. The seal meant to protect the page from exactly this ends up adding its own layer to it.

Why does the boundary run on a diagonal instead of fading evenly?

Because it's a straight record of where the light in the room actually came from.

An even fade would mean even exposure — a sheet lit the same everywhere, which almost nothing on a wall is. This one carries a hard-edged diagonal because something in the room, most likely a window or a doorway, threw the same edge of light and shadow across it every day for years. Wherever the boundary sits and however it's angled, it's a straight transcription of a shape that was never printed on the notice at all: the shadow line of the opening across the room from it.

It's the same logic as an interior in which everything drifts toward one colour and a single correct patch is left standing to prove it — a mark that only means something once you know what stood opposite it, out of frame.

What separates a convincing one from an even, boring fade?

An edge that reads as a shape, not a gradient.

A soft, centred vignette looks like a printing choice. A hard diagonal with an uneven leading edge, running off one specific corner, looks like a record of a specific room, because it is one — nobody designs a fade that particular by choice. The trapped bubble does the same job at a smaller scale: one flaw fixed permanently at the exact moment of sealing, which is a detail no amount of ageing could add afterwards.

Who owns wording like DO NOT PROP THIS OPEN?

Nobody here. The card, its heading and every ruled line under it were written for this design and name no building and no maker.

A real notice belongs to whoever posted it, and a facilities firm's actual card — its wording, its layout, its logo — is theirs to license, the way any printed material is. Where a specific real notice is the point, clearing it is part of the job. Where it isn't, an invented one does more: a line that names no door lets the wearer supply their own.

The instruction itself makes no claim of authority — it isn't a certification or an approval, just a line somebody printed and stuck up. Style has no owner. A work does.

Isn't a stained notice just a damaged sign?

No — the instruction itself is untouched. The gold runs around DO NOT PROP THIS OPEN, not over it, and the line stays legible at a glance.

That's the difference between this and a fault that actually degrades a message: nothing here makes the notice harder to obey, only harder to look at directly without noticing the room it hung in. The same shape of afterlife turns up in a word stamped over a photograph that outlived whatever it was meant to prevent — a mark kept doing its job long after anyone needed it to.

Does this work for a notice other than a fire-door warning?

Yes, for anything sealed in plastic and left facing a light source for years: a laminated menu by a till, a parking permit on a dashboard, a pool-rules card by a gate.

What has to hold is the pairing — a legible instruction, and a stain around it shaped like the room it hung in rather than like an accident. Somewhere in the same building, a fax stopped writing for six separate stretches and resumed in exact register every time — a different machine, the same kind of patient, unwitnessed record.

Does it print well?

Yes, and the diagonal wants to be built from a handful of flat tones rather than a smooth blend — a soft gradient goes muddy on fabric, where two or three distinct gold-to-pale steps read clean and hold their edge.

Near-black for the ruled lines and the bold heading, gold and warm cream for the two ends of the stain, and the faint clear border of the laminate itself picked out as a thin highlight rather than drawn in full. The bubble is small enough to sit as one solid dot near the corner. Khaki, warm sand and a pale olive ground all let the gold read as discolouration rather than as the shirt's own colour.

How do I get one made?

Describe the notice at JustOG — what it says, which corner the light hit hardest, and how far the stain has spread. Pick a direction, drag the crop frame, see it composited on the real garment, and it's made to order and shipped.

Designs other people have published are in the shop.

Nobody has propped the door open in years, and the notice still says not to.