A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Hi Mumbles,
I have tested with the columns in Power Query Editor and it seems that there is not a kind of column which can meet your need.
It may be more convenient for you to add notes in the data source directly.
Welcome other members sharing solutions or workaround here.
In addition, you can also find if there is a solution to use VBA, just post a new thread in Programming category to ask for help.
Best Regards,
Gloria