When browsing a Personal Knowbase data file — opening and closing articles while checking or looking for something — you can easily make changes accidentally.
If you realize you’ve made a change to an article that you didn’t want to change, you can immediately return the article to its last saved state. While the article window is still open, select the Undo Article Changes command from the Edit menu.
But if you know that you don’t want to make changes to a file before you open it, it’s safer to open the file in Read-Only mode to start with. In Read-Only mode, you have no risk of making unwanted changes. You will not be able to modify existing articles or create new ones.