⊢ Pass

One-argument form  See also two-argument form Right

The monadic function ⊢ (pass) simply passes its argument through unchanged. The argument can be of any type, rank and shape; the result is identical.

Although at first sight this does not appear very useful, it can be used to force the display of a result which otherwise would be non-printing:

      ⊢a←⍳10
1 2 3 4 5 6 7 8 9 10