To pick up hexacord you have to give the starting row and column position the length and the 2 dimensional array, and finally the direction :type. To define an the array use build-array.
The following goes right from row 11 and column 7. The length is 6 and the direction is right. Array named 'array' is used.
(pick-array 11 7 6 array :right)
--> (9 1 2 8 10 4)
The following :type specifications can be used:
:left
:right
:up
:down
:diagonal-up
:diagonal-down
Note that if the array boundaries are exceeded then the counting starts from the other side.