--- group([indent[, open_obj[, close_obj[, open_width[, close_width]]]]]) {...}
#    groups line break hints added in the block.
#    The line break hints are all to be breaked or not.
    ֥åɲä줿ԤΥҥȤ򥰥롼ײޤ

#    If indent is specified, the method call is regarded as nested by
#    nest(indent) { ... }.
    indent ꤵ줿硢Υ᥽åɸƤӽФ
    nest(indent) { ... } ǥͥȤƤΤȤưޤ

#    If open_obj is specified, text open_obj, open_width is called
#    at first.
#    If close_obj is specified, text close_obj, close_width is
#    called at last.
    open_obj ꤵ줿硢text open_obj, open_width 
    ǽ˸ƤФޤ
    close_obj ꤵ줿硢text close_obj, close_width 
    Ǹ˸ƤФޤ

