Array Concat Functions
Array.mergerows(OtherArray)
Merge rows from each array.
Same as Array.rowconcat(OtherArray)
Array.mergecolumns(OtherArray)
Merge columns from each array.
Array.columnconcat(OtherArray)
Same as Array.concat, and effectively adds a new set of columns to existing array.
Also same as Array.colconcat