PmWiki is a wiki-based system for collaborative creation and maintenance of websites.

PmWiki pages look and act like normal web pages, except they have an "Edit" link that makes it easy to modify existing pages and add new pages into the website, using basic editing rules. You do not need to know or use any HTML or CSS. Page editing can be left open to the public or restricted to small groups of authors.

Key PmWiki Features

Custom look-and-feel: A site administrator can quickly change the appearance and functions of a PmWiki site by using different skins and HTML templates. If you can't find an appropriate skin already made, you can easily modify one or create your own.
Access control: PmWiki password protection can be applied to an entire site, to groups of pages, or to individual pages. Password protection controls who can read pages, edit pages, and upload attachments. PmWiki's access control system is completely self-contained, but it can also work in conjunction with existing password databases, such as .htaccess, LDAP servers, and MySQL databases.
Customization and plugin architecture: One principle of the PmWikiPhilosophy is to only include essential features in the core engine, but make it easy for administrators to customize and add new markup. Hundreds of features are already available by using extensions (called "recipes") that are available from the PmWiki Cookbook.

PmWiki is written in PHP and distributed under the General Public License. It is designed to be simple to install, customize, and maintain for a variety of applications. This site is running pmwiki-2.2.11.

PmWiki is a registered trademark of Patrick R. Michaud.

PmWiki's home on the web is at pmwiki.org. Every WikiGroup can have GroupHeader and GroupFooter pages that contain markup that should be included at the beginning or end of each page within the group. This feature is useful for:

To create a group header, just create a new page called YourGroup.GroupHeader. Group headers allow authors to create groups with custom headers and footers without having to coordinate with a wiki administrator.

The default GroupHeader or GroupFooter can be suppressed on an individual page (such as a group's HomePage) by using the (:nogroupheader:) and (:nogroupfooter:) markups on that page.

If a generic GroupHeader is used in one wikigroup (say, the Site wikigroup), then the code can be easily duplicated in the GroupHeader of any other group by using (:include Site.GroupHeader:). See IncludeOtherPages.

If you want a header or footer to appear when you print a page (action print), simply create a page called YourGroup.GroupPrintHeader or YourGroup.GroupPrintFooter and fill it with your markup.

You can also set the variable $GroupPrintHeaderFmt and $GroupPrintFooterFmt in the same way as $GroupHeaderFmt and GroupFooterFmt in order to change the header used when action=print.

See also

How do I set one header for all pages/groups?

The header for each page is controlled by the $GroupHeaderFmt variable. Thus a site-wide groupheader can be added with 

$GroupHeaderFmt = '(:include {$SiteGroup}.SiteHeader
                   basepage={*$FullName}:)(:nl:)' . $GroupHeaderFmt;

Note that single quotes must be used so that $Group (which is part of the default contents of $GroupHeaderFmt) will be substituted properly by PmWiki, and that this applies to all variables ending in $...Fmt. See also the Cookbook:AllGroupHeader page.

Any form of markup is valid in $GroupHeaderFmt, thus one can do

$GroupHeaderFmt .= "Global markup text here.";

Would this then work for site footers?

$GroupFooterFmt = '(:include {$SiteGroup}.SiteFooter
                   basepage={*$FullName}:)(:nl:)' . $GroupFooterFmt;

PmWiki is a wiki-based system for collaborative creation and maintenance of websites.

PmWiki pages look and act like normal web pages, except they have an "Edit" link that makes it easy to modify existing pages and add new pages into the website, using basic editing rules. You do not need to know or use any HTML or CSS. Page editing can be left open to the public or restricted to small groups of authors.

Key PmWiki Features

Custom look-and-feel: A site administrator can quickly change the appearance and functions of a PmWiki site by using different skins and HTML templates. If you can't find an appropriate skin already made, you can easily modify one or create your own.
Access control: PmWiki password protection can be applied to an entire site, to groups of pages, or to individual pages. Password protection controls who can read pages, edit pages, and upload attachments. PmWiki's access control system is completely self-contained, but it can also work in conjunction with existing password databases, such as .htaccess, LDAP servers, and MySQL databases.
Customization and plugin architecture: One principle of the PmWikiPhilosophy is to only include essential features in the core engine, but make it easy for administrators to customize and add new markup. Hundreds of features are already available by using extensions (called "recipes") that are available from the PmWiki Cookbook.

PmWiki is written in PHP and distributed under the General Public License. It is designed to be simple to install, customize, and maintain for a variety of applications. This site is running pmwiki-2.2.11.

PmWiki is a registered trademark of Patrick R. Michaud.

PmWiki's home on the web is at pmwiki.org.