Format ⎕FMT
Monadic ⎕FMT means

Display Form

      ⎕FMT 2 4⍴⍳8
1 2 3 4
5 6 7 8
Dyadic ⎕FMT means

Format

     'I3,F5.2' ⎕FMT 2 4⍴⍳8
  1 2.00  3 4.00
  5 6.00  7 8.00

Language Elements