on headings

Cmd When Applied To Object Action
? Volume>Cyl, Unit-Dev>DD, Percent Time Display context help information.
+ Volume>Cyl Expand to reveal all entries.
+ Unit-Dev>DD Expand field size.
+ Percent Time Zoom in scale.
Volume>Cyl Collapse to show only first level.
Unit-Dev>DD Reduce field size.
Percent Time Zoom out scale.
SV Volume>Cyl Sort next level by value.
SN Volume>Cyl Sort next level by name.