Click on the “Count” tab at the top left of the page (Shortcut to cycle through tabs = W)
Locate the symbol description you want to delete
Click the “Trash" icon located to the right of the description to delete the symbol
Click "Save" to save your changes. (Shortcut = A)
Note: by deleting a symbol description, you are deleting it from the entire discipline, and also deleting all selections or measurements saved underneath it.
How to: Learn about elements.