Symbol for columns used in Formulas

[#1]

I want to clean up a data table with a few hundred columns.

Is there a trick to indicate columns that are used in a formula - similar to the symbol that indicates columns that contain formulas:

[#2]

I am not aware of any, but it is a great idea for the JMP Wish List

[#3 · Accepted solution]

ok:

Indicator Symbol for Columns used in Formulas + batch replace