Click the scene, the minimap or the satellite view. All displays update together.
SayMark @ 8828 (push-to-talk: hold Space). The agent replies Copy, Mark @ 8828.
A mark is a short reference for a 10 m cell. Four digits repeat every 1 km, so it is for close-in use. It is spoken as “mark”, never “at”.
Key shifts the digits so the same place reads differently to anyone without the key. It is tokenization, not encryption.
Format: @xxyy. The first two digits are the Easting, the last two the Northing. So @1828 is E 18 and N 28, and @0000 and @9999 are always SW of @1111.
Rotate: drag the view left or right, twist the minimap, spin the dial, use the slider or the ← → keys (Shift = bigger steps). Or say turn left 45, face south, heading two seven zero, turn around. It loops a full 360° back to the original view.
Zones: the amber lines are the real MGRS 1 km grid lines. They fall wherever they fall, so close-in points cross them constantly. The cyan square is your anchor zone, 1 km centered on you, and the circle is the 500 m range where a bare four-digit mark is safe. A mark never cares where the amber lines are. Directions use grid north.
Logic: the viewer's own mark (YOU) anchors everything. Each code resolves through a 100×100 lookup table to the nearest place with those digits, within 500 m. Amber dashes are 1 km zone edges, so a mark can sit in the neighboring zone.
Other phrases: Show marks, Remove marks, Mark hazard @ 4410, Set key Falcon.
RPD lookup · where is this mark from me?
Enter four digits. The table returns the nearest place with those digits.
Demo only. The perspective-to-ground mapping is approximate and the satellite imagery is illustrative. Real marks derive from MGRS and surveyed positions. Voice input needs Chrome, Edge or Safari over HTTPS.