Describes the cause and action for error messages.
Error Message(English)：
does not show row numbers
How to display or hide Row & Column Headers in Excel? - ExtendOffice
https://www.extendoffice.com/documents/excel/662-excel-display-hide-headings.html
Why Are Row Numbers Missing in Excel 2013? - Solve Your Tech
https://www.solveyourtech.com/row-numbers-missing-excel-2013/
Excel 2010 Row numbers disappearing - Microsoft
https://social.technet.microsoft.com/Forums/office/en-US/21d32a08-9789-4cd6-bd17-ce54591c9b78/excel-・・・
Excel - How to display row numbers on the right side - Super User
https://superuser.com/questions/1199602/excel-how-to-display-row-numbers-on-the-right-side
microsoft excel 2007 - Unhide row doesn't work
https://superuser.com/questions/479579/unhide-row-doesnt-work
How to get excel row numbers to skip the header
https://superuser.com/questions/480777/how-to-get-excel-row-numbers-to-skip-the-header
Print row and column headings - Excel - Office Support - Office 365
https://support.office.com/en-us/article/print-row-and-column-headings-de41db7e-b716-4d8b-a5fd-5fb50・・・
7 Quick & Easy Ways to Number Rows in Excel ≫ Trump Excel
https://trumpexcel.com/number-rows-in-excel/
7 Quick & Easy Ways to Number Rows in Excel - YouTube
https://www.youtube.com/watch?v=5BzdbG-7Itk