Usage: wp.pl TABLE [ROW] [COORDINATES] [OUTPUT-FORMAT]
       wp.pl --list SUBID
       wp.pl {-h|--help|--usage}

TABLE (group identifier or location, one of):
        -g | --group GROUP                      1, 2, ..., 230
        -n | --name GROUP_NAME                  P1, P-1, P2, ..., P222, Pmc21, ... (experimental)
                [-O | --gor ORIGIN_CHOICE]      1 | 2
                [-U | --gua UNIQUE_AXIS]        b | c
                [-A | --grha HR_AXES]           h[exagonal] | r[hombohedral]

ROW SELECTION
        [-w | --wyckoff-letter WYCKOFF_LETTER]  unique identifier ([a-z])
        [[-m | --multiplicity MULTIPLICITY]]    NOT a unique identifier
                                (1,2,3,4,6,8,9,12,16,18,24,32,36,48,64,96,192)

COORDINATES
        [[-x X] [-y Y] [-z Z]]  integer, fraction, float
                                (1, -2, 1/2, -3/4, 0.5, -1.23456789, ...)

OUTPUT FORMAT (default fractions)
        [-F | --float]          float ouput (default format "%.3g")
        [[--fmt FORMAT]]        PERL sprintf() format ("%s", "%g", "%.6f", "%d", ...)
                                see: http://perldoc.perl.org/functions/sprintf.html
        [-v|--verbose]          print some other info on stderr (mostly useless)
        [--qe|--quantum-espresso|--pw[scf]]
                                produce output compatible with QE input format
                                (the query must match a single coords set (see -w))

LIST GROUPS (ignore any other option, list and exit)
        -l | --list SUBID       list GROUPS by sub-identifier
                                - gua|gor|grha  group identifiers
                                - subid         all of the above
                                - none          no attributes
                                - all           list all groups
                                - names         hints for -n/--name

Examples:
        wp.pl -g 225
        wp.pl -g 3 --gua c
        wp.pl -g 142 --gor 2 -w g
        wp.pl -g 167 --grha hexagonal -m 36 -w f -x 1 -y 1/2 -z -1 -F --fmt "%s"
        wp.pl --list gor