This is an idea we have discussed in the past, but never gotten around to implementing.

However, you can see where on the spreadsheet you entered data versus where the data was duplicated by the input processor. (It is usually best to begin with the 1st spreadsheet, just to avoid confusion, but this method works from anywhere in the model.)

To see where you entered data, hold down the [Crtl] key as you use [PgDn] and/or [PgUp]. The spreadsheet will be blank, except for where you entered data. All duplicated data cells will be blanked.