This method of saving changes is clunky because it requires manual intervention for each save. It has the advantage of working on almost all desktop browsers, and many mobile browsers.
# Try creating a new tiddler using the ''new tiddler'' <<.icon $:/core/images/new-button>> button in the sidebar. Type some content for the tiddler, and click the <<.icon $:/core/images/done-button>> ''ok'' button
# Save your changes by clicking the <<.icon $:/core/images/save-button>> ''save changes'' button in the sidebar
''Tip'': most browsers have an option to prompt each time for the download location. This allows you to select the existing version of the file and replace it.