Texas Instruments TI-83 PLUS - Manual (Page 282)

TI-83 Plus Matrices 279
Matr 4 list( matrix , column# , listname )
&
List 4 matr(
List 4 matr( (lists stored to matrix) fills matrixname column by column with the
elements from each list . If dimensions of all lists are not equal, List 4 matr( fills
each extra matrixname row with 0 . Complex lists are not valid.
List 4 matr( listA , ..., list n , matrixname )
&
cumSum(
cumSum( returns cumulative sums of the elements in matrix , starting with
the first element. Each element is the cumulative sum of the column from
top to bottom.