Customize Visualization Tooltips
You can customize a visualization's tooltip to change the format of column names and column values, and you can add and format additional columns, parameters, text, and data actions to display to users.
You use a text editor with formatting tools to change the appearance of the
text and column values displayed in the tooltip. For example, you could add some descriptive
text to a tooltip, and change the appearance of column labels, column values, and any other
text in the tooltip. You can also add parameters by using the appropriate syntax, see Syntax for Referencing Parameters.