By default, Quattro Pro uses letters to label the sheet tabs (A, B, C, etc.). The tab display can be changed so that it shows the sheet number instead (Sheet1, Sheet2, Sheet3, etc.) so that looks more like other spreadsheet applications.

1. Click Tools and select Settings.

2. In the left pane, expand Application and select Compatibility.

3. Under Sheet Tab Display, check the Display as Numbers checkbox.

4. Click OK.