a absolute movement is impossible. You can only move relative to the axis or local, relative to the view-direction.The move mode. It can be one of the following values:
#PB_Relative: relative move, from the current camera position (default).
#PB_Absolute: absolute move to the specified position.
combined with one of the following values:
#PB_Local : local move.
#PB_Parent: move relative to the parent position.
#PB_World : move relative to the world.
edit: It seems that only #PB_Absolute (absolute from parent!), #PB_Relative (relativ from actual position, from parent), #PB_Local (relativ direction/view, from Parent).