To edit an entry made previously, move to the Make Entries view. Use the scroll bar to the left of the category list. This will scroll through all entries. You will also see the "Enter New" Button become inactive, and the "Edit Old" Button become active. When you get to the entry you wish to edit, change the information you want to, then click on "Edit Old". Balance information is updated to reflect the changes made by the edit. An entry must be unlocked to be edited.
Entries can also be deleted. To delete an entry, scroll to it as it were to be edited; then select (Delete Entry) from the EDIT menu. A dialog appears to confirm the deletion; to abort, click Cancel. An entry must be unlocked to be deleted.