International
Tables for
Crystallography
Volume A
Space-group symmetry
Edited by M. I. Aroyo

International Tables for Crystallography (2015). Vol. A, ch. 1.5, p. 75

Figure 1.5.1.1 

H. Wondratscheka and M. I. Aroyob
[Figure 1.5.1.1]
Figure 1.5.1.1

The coordinates of the points X (or Y) with respect to the old origin O are x (y), and with respect to the new origin [O'] they are [{\bi x}'] [({\bi y}')]. From the diagram one reads [{\bf p}+{\bf x}'={\bf x}] and [{\bf p}+{\bf y}'={\bf y}].