Describes the cause and action for error messages.
Error Message(English)：
merge cells unavailable in excel
How to enable merge and center in excel 2010 - YouTube
https://www.youtube.com/watch?v=pfPh-_8EwjQ
https://www.youtube.com/watch?v=pfPh-_8EwjQ
how to enable merge and center button in excel - YouTube
https://www.youtube.com/watch?v=7KGYlHa85YQ
https://www.youtube.com/watch?v=7KGYlHa85YQ
Excel Tutorials : How to enable Merge & Center in Excel - YouTube
https://www.youtube.com/watch?v=E0_5DBAHz6k
https://www.youtube.com/watch?v=E0_5DBAHz6k
microsoft word 2010 - Can't merge table cells - Merge Cells button ...
https://superuser.com/questions/418525/cant-merge-table-cells-merge-cells-button-greyed-out
How do I add conditional formatting to cells ...
https://superuser.com/questions/1260014/how-do-i-add-conditional-formatting-to-cells-containing-n-a-・・・
Excel Conditional Formatting greyed out ...
https://superuser.com/questions/904595/excel-conditional-formatting-greyed-out