groff: Tabstops in ms

 
 4.3.5.6 Tab Stops
 .................
 
 Use the 'ta' request to define tab stops as needed.  ⇒Tabs and
 Fields.
 
  -- Macro: .TA
      Use this macro to reset the tab stops to the default for 'ms'
      (every 5n).  You can redefine the 'TA' macro to create a different
      set of default tab stops.