Hide, Show All, and Delete
In some CAD files the amount of data displayed makes it difficult to identify the desired layers. The Hide command removes the selected data from screen. It can be activated from the Right Mouse menu, the View menu, or by pressing Alt-H.
The reverse of Hide is the Show All command. Show All is selected on either the Right Mouse menu or the View menu.
The Delete command removes the selected data from the screen permanently. Delete is activated by pressing the Delete key or through the View menu. It does not affect the original CAD file.
Undo and Redo
Earthwork 4D supports eight levels of undo. The Undo command is activated by pressing Ctrl-Z or through the Edit menu. The Redo command is usually used when Undo was used one too many times. It also supports eight levels and is activated by pressing Ctrl-Y or through the Edit menu.
Also see: Data Transfer Menu