How to: Add a note to a worksheet.
Solution:
Type the cell address for a note in the 'Cell' box and type text in the 'Text Note' list box.
1) Select the 'Insert' menu and select 'Note...'. (The Cell Note dialog box appears.)
2) Type the cell address in the 'Cell' box.
3) Type text in the 'Text Note' list box.
4) Click 'OK'.
NOTE: Notes are indicated in the worksheet by a small marker in the corner of the cell.