Squad ⌷
Squad means
⌷ ⍵
If ⍵ is an array, returns ⍵.
If ⍵ is ref to an instance of a Dyalog Class with a
Default Numbered property, all items of that property
are returned.
If ⍵ is a COM or .NET collection, returns all elements
in the collection as an array.
Index with Axes means
mat
1 2 3 4
5 6 7 8
9 10 11 12
2 3 ⌷ mat
7
2 ⌷ mat
5 6 7 8
2 ⌷[2] mat
2 6 10