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

International Tables for Crystallography (2016). Vol. A, ch. 3.1, p. 710

Figure 3.1.3.2 

P. M. de Wolffc
[Figure 3.1.3.2]
Figure 3.1.3.2

The effect of the special conditions. Border lines of type-I and type-II regions are drawn as heavy lines if included. The type-I and type-II regions are marked as in Fig. 3.1.3.1[link]. A heavy border line of a region stops short of an end point if the latter is not included in the region to which the border belongs. a, b net primitive orthogonal; special conditions (3.1.3.5c)[link], (3.1.3.5d)[link].