)sic

      MAT
11 12 13 14
21 22 23 24
31 32 33 34

      2 1 ⌷ MAT
21
      2 (1 2) ⌷ MAT
21 22

      MAT[3;]
31 32 33 34
      3 ⌷ MAT
RANK ERROR
      3⌷MAT
      ^ ^

      ⍝ I was expecting the whple third line as result

Xtian.

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