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computer programs
A brief description of a 3D graphics simulation program for single-crystal diffractometry is presented. The program displays both χ- and κ-type diffractometers with a zero-dimensional (conventional) counter or a two-dimensional area detector and simulates the process of data collection. This program has been designed for assisting actual data collection using these devices, but it could also be useful as a tutorial aid for those starting to learn single-crystal diffractometry.