In the Paragraph Styles panel under Paragraph/Spacing you can set the Alignment to the following:
Left
Center
Right
Justify Last Line Left
Justify Last Line Center
Justify Last Line Right
Justify All
It would be nice to see the following:
Away from Spine
Toward Spine
It is needed (for me) in instances where i am working with headers/footers primarily, and for other layouts when putting together books for art exhibitions etc.