Minecraft wiki entry for Sign, associated text: Signs may be placed on the top or side of other blocks (including some non-solid blocks like fences, glass, and other signs). To place a sign, use a sign item while pointing at the block the sign should be attached to, enter the desired text (possibly none), and click the "Done" button or press "escape" on a keyboard (or press × in Bedrock Edition, on an Xbox controller, on a PlayStation controller, or B on a Nintendo Switch controller. Closing the virtual keyboard on a mobile device also exits the typing menu). To place a sign on a block that can be interacted with by the use control (for example, chests, note blocks, etc.), sneak while placing the sign.