Erased variables

[rvi2005]

Variables that were "erased" rather than deleted are still listed although not used. How can they be deleted permanently?

[tomfid]

Whether variables remain in the model depends on user choice - when you delete a variable with the delete key, a dialog asks whether to remove them from the model or only the current view.

You can find these variables by opening the Control Panel > Variables tab, and selecting the "orphans" filter. Then you can edit the equation, and use the Delete Variable button to remove the orphan.

Another option is to text-edit the .mdl file.

[rvi2005]

Many thanks tomfid.Problem solved.
Easiest way is to open the mdl file in Notepad or equivalent, and find the orphans.