as a matter of form

a matter of form

That which is done for the sake of procedure, formality, appearances, or the accepted norm, often implying a lack of usefulness or necessity. I know we already covered the chapter on social economics last week, but as a matter of form, let's review its key points before beginning today's lecture. The doctors weren't too worried about her illness, but as a matter of form they decided to keep her in the hospital overnight.
See also: form, matter, of
Farlex Dictionary of Idioms.

(do something) as a matter of ˈform

(do something) because it is polite, or because it is the usual way of doing something: We knew everyone agreed, but we had a vote as a matter of form. I need your signature, just as a matter of form.
See also: form, matter, of
Farlex Partner Idioms Dictionary
See also:
  • a matter of form
  • get (one's) priorities straight
  • for its own sake
  • for God's sake
  • for God's, heaven's, pity's, etc. sake
  • for goodness' sake
  • for Christ's sake
  • For Pete’s sake!
  • for Pete's sake
  • Pete