Tangent 2.2 - Manual (Page 36)

Page 36
Click this button to add formulas to your list. Make sure to give each formula a
unique name.
Edit Button
Edit an existing formula. First you must select (from the list) a formula you wish
to edit and then push this button.
Delete Button
Select (from the list) the formula you wish to delete and push this button.
Exit Button
Exit this screen.
Make Topmost Window (Up Arrow button)
Click this button if you want this screen to "float on top" of all other windows.