Hi Debbie,
The trick to replacing many unknown words is to use a wildcard search. For this specific task:
- Open the Replace dialog (Ctrl+H) and click the More button to expand the bottom of the dialog.
- Check the box for "Use wildcards".
- In the Find What box, type or copy/paste the search expression
DELETE [A-Za-z0-9 .,]@^13
- If you want to remove the entire line including the paragraph mark, leave the Replace With box empty. To keep the paragraph mark, type ^p in that box.
- Click the Replace All button. That will remove every line in the document that matches the search expression.
For more information about wildcard searches, see https://www.gmayor.com/replace_using_wildcards.htm .