Key

Action

Up

Moves the current item up one node.

Down

Moves the current item down one node.

PgUp

Moves the current item up one screenful.

PgDn

Moves the current item down one screenful.

Home

Moves the current item to the top of the tree.

End

Moves the current item to the bottom of the tree.

Left

Moves up one level and then collapses the current node; specifically, the first Left moves up to the parent; the second closes the node.

Right

Expands the current node and then moves down one level; specifically, the first Right opens up the node; the second moves down to the first child.