| Name | Kind | Description |
| RelativePlacement | class | |
| RelType | class | |
| relType | attribute | |
| Render Entities | class diagram | |
| Render Request | activity parameter | |
| RenderEngine | class | |
| RenderEngine | package | |
| RenderPathManager | component | |
| renderSegments | relation | |
| RenderState | class | |
| repr | attribute | human readable representation of the condition characterizing this allocaton, e.g. "t >= 10" |
| resolve | operation | create an actual (explicite) placement while trying to satisfy the network of adjacent objects and placements. |