Column description next to title

Next to setting a title for a column, it would be great to be able to add a description field to each column.
In this you could set

  • explanation for how to use this column (handy for multiple users)
  • why you created a this column for future reference
  • explanation of how your formula is set up (handy if you have to go back to it months later)
    this would be viewable as a call-out

in google sheets you can add a comment to each field, so I use this in the title row
I’m looking for something similar
Now i need to write everything in the doc itself, or create long column titles (which is not handy in formulas)