This book (Practical Electron Microscopy and Database) is a reference for TEM and SEM students, operators, engineers, technicians, managers, and researchers.
 

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The [110] HRTEM image, taken from a cubic perovskite PbMg_1/3Nb_2/3O₃ structure shown in Figure 3523, revealed the atomic short-range order extending in the [111] directions. The schematic drawing on the left indicates some ordered domains. The reflections in red in the inset indicate the ordered superlattice structure.

Figure 3523. Atomic short-range ordering in PbMg_1/3Nb_2/3O₃ structure. [1]
The reflections in red in the inset indicate the ordered superlattice structure.

[1] H. B. Krause, J. M. Cowley, and J. Wheatley, Acta Crystallographica, Section A: Crystal Physics, Diffraction, Theoretical and General Crystallography, 35, 1015 (1979).