| Name | Kind | Description |
| PathManager | class | |
| placement | relation | |
| Placement | class | |
| play | operation | |
| playlist | node | |
| plugID | attribute | Identifier of the Plugin to be used |
| PluginAdapter | class | |
| pnode | node | |
| prepareStream | operation | |
| proc | node | |
| Processor | class | |
| ProcNode | class | |
| Projector | class |