Oct 2022, Version 1.4.1: Improved the range of operation syntax variations accomodated by FINDSSG.
Jan 2022, Version 1.4: Implemented unified (UNI) symbols for magnetic superspace groups and fixed some minor bugs.
July 2020, Version 1.3: Now allows for a variety of input-format scenarious that arise in output from different tools of the ISOTROPY Software Suite. An integer index is now permitted before each operation. Centering translations can now be listed either as vectors in the "centering positions" field or as operations in the "symmetry operations" field. Operations can be listed on separate lines or in semicolon separated list. Operations can be enclosed in parentheses or not. As before, operations may not contain space characters or be enclosed in quotes, though this could be implemented later.
May 2019, Version 1.2: FINDSSG can now identify magnetic superspace groups (MSSG) following an exhaustive tabluation of magnetic superspace groups in up to 3+3 dimensions (to be published soon). See the help page for info.
Mar 2013, Version 1.1: User can choose the desired notation for superspace coordinates: x,y,z,t or x1,x2,x3,x4, or xs1,xs2,xs3,xs4. FINDSSG automatically detects the notation in the input and will use that notation in the output.
Jan 2011, Version 1.0: FINDSSG first appeared on the internet as part of the ISOTROPY Software Suite