title: How to freeze the =today() function once data has been entered
body: <p>I would like to use the =TODAY() function in a table in excel. However, once data has been entered into that table row, I would like it never to change dates again (effectively capturing the date the row's data was added). </p>
  
  <p>This will be used on every row in the table, so as data is entered into the table down the rows, each date will be captured.</p>
  
  <p>Is this possible, how do I do it?</p>
  
  <p>EDIT - pnuts it is not the same as <a href="https://stackoverflow.com/questions/29032063/insert-todays-date-with-button-as-date-not-function" title="this">this</a> question. I do not want to use a button, rather a cell formula.</p>