Abstract: An array of adjacent panels forms a display sign. Each panel has a frame that holds a display sheet showing a cellular portion of the sign. The display sheet covers a front of the frame. A border of the display sheet wraps around the sides of the frame and is trapped in a backside channel in each side member of the frame. Retainers pushed into the channel trap the border in the channel. Each frame may be quickly attached and released from a respective base attached to a wall or other support structure, allowing quick changes to all portions or selected portions of the sign. A mobile app may be provided that configures the sign in a camera image of the support structure, divides the sign into panels, and generates printer output in a selected printer page size for each panel, including the border.

Abstract: An array of adjacent panels forms a display sign. Each panel has a frame that holds a display sheet showing a cellular portion of the sign. The display sheet covers a front of the frame. A border of the display sheet wraps around the sides of the frame and is trapped in a backside channel in each side member of the frame. Retainers pushed into the channel trap the border in the channel. Each frame may be quickly attached and released from a respective base attached to a wall or other support structure, allowing quick changes to all portions or selected portions of the sign. A mobile app may be provided that configures the sign in a camera image of the support structure, divides the sign into panels, and generates printer output in a selected printer page size for each panel, including the border.