Shadows are similar to [[options|option]] in that they control the configuration of the TiddlyWiki, but are used for settings that need to be expressed in a large body of text instead of a single input field or checkbox. They are also referred to as shadow tiddlers, although they are quite different from regular tiddlers in two senses: * Shadows are only text strings with a title - they have no tags, modifier, custom fields, etc. * Shadows may be overridden by a regular tiddler of the same name. It will be processed the same way as the shadow and if you delete (or rename) it, the original shadow will again be "restored" and come into effect. For example, the default ~SiteTitle shadow is "TiddlyWiki". If you create a new tiddler called ~SiteTitle and insert "~MyWiki" in its text, the title will now be rendered as "~MyWiki:". And if you look at the list of shadows in the sidebar tabs control, you'll notice ~SiteTitle is shown in bold to indicate it's been overridden. You can't see the original value anymore, but it's still there; delete your SiteTitle tiddler, and you will see the original shadow again containing "TiddlyWiki", and in the same vein, the site title will revert to "TiddlyWiki". Tags relating to default content: <<list filter [tag[DefaultContentShadow]]>> Tags relating to tiddler presentation: <<list filter [tag[TiddlerShadow]]>> Tags relating to stylesheets: <<list filter [tag[StyleSheetShadow]]>> Tags relating to HTML markup: <<list filter [tag[MarkupShadow]]>> Tags relating to page presentation: <<list filter [tag[PageShadow]]>> Tags relating to page title (a subset of page presentation): <<list filter [tag[TitleShadow]]>> Tags relating to sidebar tabs (a subset of page presentation): <<list filter [tag[TabShadow]]>>
