How to edit account

I have created an account, I want to delete one buy. How can I do it?


Quote from manual:

You have to remember that you must enter all transactions in chronological manner(oldest first, newest last), as account manager won’t allow you to add trades out-of-order. If you make mistake, there is one-level undo that you can use to revert to state before last transaction. If you made more mistakes, the only option is to close account without saving and re-open original file.