| D | G | I | L | P | S | T |
| DoneSystemMsg |
| GetSystemEvent |
| InitSystemMsg |
| LastSystemEvent |
| PendingSystemEvent | PendingSystemTail | PutSystemEvent |
| PendingSystemEvents | PollSystemEvent | |
| PendingSystemHead | PSystemEvent |
| SysClose | SysReleaseFocus | SysSetFocus |
| SysNothing | SysResize | SystemEventBufSize |
| TSystemEvent | TSystemMessage |