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1. As you are entering data into a form, the program validates your entries.
   
   
2. If an entry fails validation, the program displays a pop-up dialog describing the error; the cell color is also set to pink after you click OK in the dialog and the cursor returns to the field.  Sometimes the invalid entry is erased.
   
   
3. You do not need to correct the error to continue entering data in the form, but should correct all errors before submitting your report.

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