Pages in TYPO3 CMS have many properties. So far we have seen the title (which is quite obvious), the "Visibility > Page > Disable" flag which hides the page in the frontend and the "Visibility > In menus > Hide" flag which makes it so that the page does not appear in any navigation element.
A lot of metadata can be entered in the Metadata tab. It is all very standard but it is worth mentioning that the actual usage of that metadata in the frontend depends on how the site is configured.
The Introduction Package makes use of the "description", "keywords" and
"author" fields to fill the corresponding meta tags. The description
is used again to defined the
og:description meta tag, whereas the page
title is used for the
og:title meta tag.
All of this is driven by TypoScript making TYPO3 CMS both powerful and flexible.
As can be expected the Appearance tab contains properties that will influence how the page is rendered in the frontend.
Backend layouts determine how many content areas are made available for input in the WEB > Page module. But they can also be used as information during the rendering to influence the actual output in the frontend.
An interesting field is "Show content from page" at the bottom of the screen. It tells the page to display the content from another selected page. For repeating the content of a single page, this is far easier to use than mount points.
The Behaviour tab has a rich set of options and influences very different aspects of the page.
The first part is related to linking. It defines if an alias can be
used for linking to this page. This is not related to speaking URLs.
If you define "foo" as an alias, the page can be called up using
http://www.mysite.com/index.php?id=foo. A default target for calling
this page can also be defined, as well as a specific protocol.
The caching part lets you define a specific cache duration for this page or disable the cache entirely for this page (something which you should avoid). All pages which have the same cache tag will have their cache deleted when the cache is flushed using that given tag. Note however that this is not used by TYPO3 CMS by default, but may be used by extensions.
The language part overrides the default behaviour of translations. This is covered in more depth in the Frontend Localization Guide.
Next come a bunch of flags with various meanings:
- Use a Root Page
- Indicates that this page is the start of a new web site. The page icon is replaced by a world icon, as can be seen for the "Congratulations" page.
- Include is Search
- By default every page will be included in the TYPO3 CMS built-in search engine (extension "indexed_search"). Use this flag to exclude the current page.
- Editable for Admins Only
- This restricts edition of the page strictly to users with admin rights, no matter what other permissions may have been set.
- Stop Page Tree
- Influences only the backend. If enabled, this option excludes the subtree from rendering. Very useful if you have alot of subpages.
Finally the "Use a Container" property is just an indication of what the page may contain, but does not actually restrict the types of records that can be created. It will change the page icon and is just a visual help.
The Resources tab first and foremost makes it possible to link media files to the current page. What is done with those links depends on the frontend rendering configuration. Typically this may be used to associate an image with each page, but there's no preconfigured behaviour.
The rest of the properties are related to Page TSconfig. This is a configuration language which can be used to tune many parts of the backend.
TYPO3 CMS provides a system-wide categorisation tool. By default categories can be applied to pages, content elements, and files.
Categories should be defined in some folder and can then be assigned to pages. The content element type "Special Menus" can display - among others - a list of pages from a selected category.