(:Summary:variables used with [[PmWiki/page lists]] and search results:)
:$EnablePageListProtect:When set to 1 (which is the default), causes [@(:pagelist:)@] and [@(:searchresults:)@] to exclude listing any pages for which the browser does not currently have read authorization.  Setting this to zero means that read-protected pages can appear in a listing, but can also speed up searches considerably (because page permissions do not need to be checked).

:$SearchPatterns:An array of page name patterns to be required or excluded from search and [[PmWiki/PageLists|pagelist]] results.  In order to be included in a search listing or page listing, a page's name must not match any pattern that is delimited by exclamation points (!) and must match all other patterns.  See [[Cookbook:SearchPatterns]].
--> [@# Limit all searches to Main group
$SearchPatterns['default'][] = '/^Main\\./';
# Exclude the Main group from search results
$SearchPatterns['default'][] = '!^Main\\.!';
# Exclude RecentChanges pages from search results
$SearchPatterns['default'][] = '!\\.(All)?RecentChanges$!';
# Prevent a page from listing itself in (:pagelist:) or (:searchresults:)
$SearchPatterns['default'][] = FmtPageName('!^$FullName$!', $pagename);
@]

:$SearchBoxOpt:
--> For example [@ $SearchBoxOpt ['target'] = '$DefaultGroup.Search'; @]


:$EnablePageIndex:When set to 1, causes PmWiki to maintain a "link and word index" in $PageIndexFile which significantly speeds up categories, backlinks, and searches.

:$PageIndexFile:The location of the "page index" file for [@(:pagelist:)@], defaults to @@$WorkDir/.pageindex@@.

:$PageListCacheDir:The name of a writable directory where PmWiki can cache results of [@(:pagelist:)@] directives to speed up subsequent displays of the same list.  Default is empty, which disables the pagelist cache.
--> [@# Enable pagelist caching in work.d/
$PageListCacheDir = 'work.d/';
@]

:$PageSearchForm:The page to be used to format search results for [@?action=search@] (unless the current page has a "searchresults" directive in it).  This variable can be an array, in which case the first page found from the array is used.
--> [@# Use Search page in current group if it exists, otherwise use Site.Search
$PageSearchForm = array('$Group.Search', '[=$[$SiteGroup/Search]=]');
@]

:$FPLTemplatePageFmt:The pages to be searched for a pagelist template specified by a [@fmt=#xyz@] parameter.  Defaults to searching the current page, [[Site.LocalTemplates]] and [[Site.PageListTemplates]].

--> [@# PMWiki default setup
global $FPLTemplatePageFmt;
$FPLTemplatePageFmt = array(
    '{$FullName}', 
    '{$SiteGroup}.LocalTemplates', 
    '{$SiteGroup}.PageListTemplates');@]

-> It can be customized to look in other pages.

--> [@# Search a Group.Templates page as well as the Site templates
global $FPLTemplatePageFmt;
$FPLTemplatePageFmt = array(
    '{$Group}.Templates',
    '{$SiteGroup}.LocalTemplates',
    '{$SiteGroup}.PageListTemplates');@]

-> Or declare defaults for the template array:
--> [@# Search a Group.Templates page as well as the Site templates
global $FPLTemplatePageFmt;
SDV($FPLTemplatePageFmt, array('{$FullName}',
    '{$Group}.Templates',
    '{$SiteGroup}.LocalTemplates', '{$SiteGroup}.PageListTemplates')
   );@]

:$EnableUndefinedTemplateVars: This variable controls how undefined [={$$Variable}=] is processed in [[IncludeOtherPages|includes]] and [[PageList templates]]. If set to 0 (default), undefined [={$$Variable}=]s are removed from the included section or template. If set to 1, undefined [={$$Variable}=]s are displayed as is, with {$$...}. ''Note that PmWiki versions 2.2.13 and earlier '''kept''' unset include/template variables.''
: : @@$EnableUndefinedTemplateVars = 0;@@ # Delete unset raw template variables
: : @@$EnableUndefinedTemplateVars = 1;@@ # Keep and print unset raw template variables