A computer program to enumerate and identify crystal-structure types

A computer program in BASIC language is presented to enumerate and identify crystal-structure types. If a chemical formula of contents in a primitive cell is given, the program enumerate all the possible structures for every space group, each of which is specified by the detailed arrangement of the atoms in the cell. Conversely, if a way of arrangement of the atoms is given, the legal name of the structure can be obtained uniquely in the present nomenclature. So any structure can be identified with another acoording to whether their names are reduced to the same legal one or not