| + or = | zoom in |
| - | zoom out |
| * | zoom to extents |
| Home | go to the top sheet |
| Delete or Backspace | go to the next higher sheet in hierarchy |
| PgUp | go to the previous sheet in sequence |
| PgDn | go to the next sheet in sequence |
| Tab | toggle between old and new revision |
| ? or H | open/close help window |
| D | when comparing revisions, show difference |
| N | show newer sheet |
| O | show older sheet |
| Q | quit the vieweer |