authors (basic)

Pm Wiki has the capability of classifying pages into groups of related pages. By default page links are between pages of the same group; to create a link to a page in another group, add the name of the other group and a dot or slash to the page name. For example, links to Main.HomePage could be written as:

 *[[Main.HomePage]] *[[Main/HomePage]] *[[Main(.HomePage)]] *[[Main.HomePage | link text]] 

## Creating groups

Creating a new group is as easy as creating new pages; simply edit an existing page to include a link to a page in the new group, then click on the '?' to edit the page. By default, group names must start with a letter (but this can be changed by the wiki administrator).

For example, to make a page called Bar in the group Foo, create a link to [[Foo/Bar]] and follow the link to edit that page.

## Groups in a standard Pm Wiki distribution

• Main : The default group. On many wikis, it contains most of the author-contributed content. Main.Home Page and Main.Wiki Sandbox come pre-installed.
• Pm Wiki : An edit-protected group that contains Pm Wiki documentation and help pages.
• Site : Holds a variety of utility and configuration pages used by Pm Wiki, including SideBar, Search, Preferences, AllRecentChanges, ApprovedUrls, and Blocklist.

To list all the groups in a site, try the markup (:pagelist fmt=group:).

## Special Pages in a Group

By default, the Recent Changes page of each group shows only the pages that have changed within that group; the Site.AllRecentChanges page shows all pages that have changed in all groups.

Each group can also have GroupHeader or GroupFooter pages that contain text to be automatically prepended or appended to every page in the group. A group can also have a GroupAttributes page that defines attributes (read and edit passwords) shared by all pages within the group.

No, Pm Wiki does not have subpages. Pm's reasons for not having subgroups are described at PmWiki:HierarchicalGroups, but it comes down to not having a good page linking syntax. If you create a link or pagename like [[A.B.C]] Pm Wiki doesn't think of "B.C" as being in group "A", it instead thinks of "C" as being in group "AB", which is a separate group from "A". Wiki administrators can look at Cookbook:SubpageMarkup and Cookbook:IncludeWithEdit for recipes that may be of some help with developing subgroups or subpages.