The Sign is a craftable Structure. While it can't be written on, it shows up as an icon on the map. As such, it can be used as a marker for areas of interest which don't show up on the map (such as Blue Mushrooms and/or Mushroom Rings, or Beefalo herds).
- This item was added in the A Little Rain Must Fall update.
- Naturally occurring Signs can be found in Adventure Mode, usually near Maxwell's Tooth Traps.