on headings
| Cmd | When Applied To Object | Action |
|---|---|---|
| ? | Corrid | Display context help information. |
| + | Corrid | Expand to reveal all entries. |
| – | Corrid | Collapse to show only first level. |
| SV | Corrid | Sort next level by value. |
| SN | Corrid | Sort next level by name. |
| SD | Corrid | Sort next level by service time. |