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The program TWINLAW reads two orientation matrices obtained from a non-merohedrally twinned crystal and evaluates the twin law. In a second step, the program HKLF5 uses this twin law to generate a reflection file for refinement with the HKLF5 option of the SHELXL program. The use of both programs is demonstrated by means of the structure determination of Sr(H2PO4)2·H2O.

Supporting information

cif

Crystallographic Information File (CIF) https://doi.org/10.1107/S0021889803027146/dd5003sup1.cif
Contains datablocks final, global

hkl

Structure factor file (CIF format) https://doi.org/10.1107/S0021889803027146/dd5003sup2.hkl
Contains datablock final

zip

Zip compressed file https://doi.org/10.1107/S0021889803027146/dd5003sup3.zip
Programs for DOS and example files

zip

Zip compressed file https://doi.org/10.1107/S0021889803027146/dd5003sup4.zip
Programs for Linux and example files

pdf

Portable Document Format (PDF) file https://doi.org/10.1107/S0021889803027146/dd5003sup5.pdf
Manual for TWINLAW

pdf

Portable Document Format (PDF) file https://doi.org/10.1107/S0021889803027146/dd5003sup6.pdf
Manual for HKLF5

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