Often a couple of objects are placed side by side, all with the same distance to each other. Except the duplication dialog, LibO has no aids to place controls at the same distance like similar objects. Microsoft Visio calls this feature alignment and spacing guides.
Created attachment 125392 [details]
Spacing and alignment guides in Google Draw
*** Bug 103299 has been marked as a duplicate of this bug. ***
Nice GSoC project...