One major feature of TiddlyWiki that many new users are unaware of is the degree to which TiddlyWiki can be customised, just by adding or removing SystemTags in key shadow tiddlers or in your own custom tiddlers.
* You can add and remove default features in tiddlers in either viewing or editing mode (let's say you find the tiddler subtitle distracting, or you want to add yourself a reminder that you will see when you edit tiddlers)
* You can also add and remove default features from the general page layout (maybe you want to add a clock to the sidebar, or replace one of the page control buttons with your own)
* You can also rearrange the order in which these features are displayed (perhaps you would like tags above tiddler titles, or the subtitle of your TiddlyWiki below the page control buttons)
