In the Options dialog, click OpenOffice.org Impress > View.
Specifying view options for Impress.
Rulers visible displays the rulers at the top and the left of the work area.
Guides when moving displays dotted guides that extend beyond the box containing the selected object and which cover the entire work area, helping you position the object when moving it. You can also use the Guides when moving icon
on the Options toolbar.
All control points in Bézier editor displays the control points of all Bézier points if you have previously selected a Bézier curve. If this box is not marked, only the control points of the selected Bézier points will be visible.
Contour of each individual object displays the contour line of each individual object when moving the object. This enables you to see if single objects conflict with other objects in the target position. If you do not mark this box, Impress displays only a square contour that includes all selected objects.