I believe it is Book1
how to create a excel sheet
Pfa the excel sheet
To reference an Excel sheet in a formula or function, you can use the sheet name followed by an exclamation mark (!) before the cell reference. For example, to reference cell A1 in a sheet named "Sheet1", you would write "Sheet1!A1" in the formula.
Right click on the sheet tab and select "Rename" from the menu options. Type your new name.
They are the same thing, excel is Microsoft's spreadsheet programme.
Add a sheet
A chart on an existing worksheet is an embedded sheet and has no specific name. A chart on its on sheet is known as a chart sheet and will initially have the name Chart1, with Chart2 for the next one, Chart3 for the next one and so on. These names can be changed by the users.
Calculating DSCR in Excel sheet
Select the sheet.
&[Tab] is the code that is used.
A spread sheet
Use the name of a sheet, followed by an exclamation mark and a cell reference. The following would take the value in cell C21 on Sheet2 and put it wherever the formula is typed. =Sheet2!C21