The WORKBOOK() function returns the name of the current workbook.
=WORKBOOK()
The WORKBOOK() function is easy to use. You just need to specify a cell with text and LO Calc will automatically return the required word:
=WORKBOOK()
We will have the following result:
You can use the function WORKBOOK() by installing the extension
After that, this function will be available in all files that are opened in LibreOffice Calc .