Hi,
⍝ just a simple matrix i∘.+i←¯1+⍳2 0 1 1 2 ⍝ make it an element ⎕ ← e ← ⊂i∘.+i←¯1+⍳2 0 1 1 2 ⍝ matrix of matrixes.... 2 2 ⍴ e 0 1 0 1 1 2 1 2 0 1 0 1 1 2 1 2 ⍝ enclose the matrix of matrixes indents nicely ... ⊂ 2 2 ⍴ e 0 1 0 1 1 2 1 2 0 1 0 1 1 2 1 2 ⍝ display of enclose each 'sub'-matrix misses space line ⊂¨2 2 ⍴ e 0 1 0 1 1 2 1 2 0 1 0 1 1 2 1 2 Best Regards Hans-Peter
