20070201
  u   Deleting Matrices
  You can delete either a specifi c matrix or all matrices in memory.
   
  
  
  
  
  
  
  u  To delete a specifi c matrix
    1. While the Matrix Editor is on the display, use f  and c  to highlight the matrix you 
want to delete.
  
   2. Press 1 (DEL).
  
   3. Press 1 (Yes) to delete the matrix or 6 (No) to abort the operation without deleting 
anything.
  u  To delete all matrices
    1. While the Matrix Editor is on the display, press 2 (DEL·A).
  
   2. Press 1 (Yes) to delete all matrices in memory or 6 (No) to abort the operation 
without deleting anything.
2-8-4
Matrix Calculations
 # The indicator “None” replaces the 
dimensions of the matrix you delete.
  # Inputting the format or changing the dimensions 
of a matrix deletes its current contents.