Texas Instruments TI-83 PLUS - Manual (Page 264)

TI-83 Plus Matrices 261
Deleting a Matrix
To delete matrices from memory, use the
MEMORY MANAGEMENT/DELETE
secondary menu (Chapter 18).
Viewing a Matrix
The matrix editor has two contexts, viewing and editing. In viewing
context, you can use the cursor keys to move quickly from one matrix
element to the next. The full value of the highlighted element is displayed
on the bottom line.
Select the matrix from the
MATRX EDIT
menu, and then enter or accept the
dimensions.