To edit a column or row, click the letter or number of the section you would like to edit. 

You will have three options:

                      1) Name the column/row.
                      2) Add column/row to the left or the right.
                      3) Resize

  1. Name the column/row by clicking the letter along the top, or the number along the side, and typing the new name. Hit enter when you are done.

2. Add a column/row by clicking the left or right arrows. Note that once the columns/rows have beed added they cannot be erased.

3. Resize a column/row by clicking (+) or (-). You can change the size of the columns/rows as many times as you'd like.

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