Copyright (C) 2026 swm contributors This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This interface exposes ephemeral titles and colors associated with swm's fixed workspaces. Metadata exists only for the lifetime of the compositor process. When a client binds, the compositor sends one metadata event for every workspace followed by done. Later changes are sent in the same way. The workspace number starts at one. Color is encoded as 0xRRGGBBAA; zero means unset and omits the color bit from flags. An empty title means the additional label is unset. Selected identifies the workspace on swm's currently selected output. Set the title of a workspace. An empty title clears it. Set the color of a workspace. Zero clears it.