Click anywhere on the sheet. Scroll to zoom in first if you want to be fussy.
One square of ink on a shared sheet of paper. It spreads on its own, in real time, and it keeps going after you close the tab. Open the page once a week or it dries out and flakes off for good.
Optional, and you can set it later. It never leaves this device. Only a hash of it is saved, so there is no way to reset it. Write it down.
Already dropped one somewhere else?
Type the secret phrase you set on your other device and this browser takes over that blot, with all its ground, allies and wars.
Capitals and extra spaces do not matter.
A single sheet of paper, shared by everyone who opens this page.