computer programs
A computer program is reported for plotting stereographic projection and exploring crystallographic orientation relationships. It offers a user-friendly interface to fully control stereographic projections of an arbitrary pole centre for an arbitrary crystal structure and to illustrate composite stereographic projections.
addenda and errata
Errors in the paper by Liu, Waclawik & Luo [J. Appl. Cryst. (2010), 43, 448-454
] are corrected.