Usage: tabs [options] [tabstop-list]

Options:
  -0       reset tabs
  -8       set tabs to standard interval
  -a       Assembler, IBM S/370, first format
  -a2      Assembler, IBM S/370, second format
  -c       COBOL, normal format
  -c2      COBOL compact format
  -c3      COBOL compact format extended
  -d       debug (show ruler with expected/actual tab positions)
  -f       FORTRAN
  -n       no-op (do not modify terminal settings)
  -p       PL/I
  -s       SNOBOL
  -u       UNIVAC 1100 Assembler
  -T name  use terminal type 'name'
  -V       print version

A tabstop-list is an ordered list of column numbers, e.g., 1,11,21
or 1,+10,+10 which is the same.