Directory Tree, Seeing what's there Options

[JimL]

Is there any chance that the directory tree in the left pane could shift to the right when a click brings up a deeper level? That is, any newly displayed sub-directory would appear within the pane. Or at least any + marks would.

As it is, when near the edge of the pane, clicking the + mark on a sub-directory always displays the deeper level to the right outside the pane - at least it does here.

I suppose an alternative would be to do as some mail or news programs do - have a single click that opens the tree pane into the whole screen (a second click would return it).

JimL