To simplify data entry and review, the XPE cells are color coded. A color Legend appears at the bottom of the Summary sheet as shown in the following figure:
A description of the spreadsheet color-coding scheme is provided in the following table:
|Available User Action
|Allows user to enter data
|Displays a calculated value
|Displays a summary value
|User override of cells normally calculated by XPE
|Flags a warning. Indicates that a resource is not available or a specification is invalid.
Flags an error. Following are a few examples:
|Read-only. Edit other cells to correct the error.