Just a simple example of using cloning to create a grid mode.
In normal view the objects are locked.
Click the upper right button to activate edit mode.
You can drag the objects or resize (bottom right corner of object).
When dragging is done the object snaps/aligns to top and right gridlines.
Has guides for moving and sizing.

By
sirsmiley at 2008-03-10
More Images Here:
http://profile.imageshack.us/user/sirsmiley/