$EnableGUIButtons When set to '1', turns on the graphical buttons in the "Edit Page" form.  # turn on graphical edit buttons $EnableGUIButtons = 1;


$EnablePostAuthorRequired When set to '1', posting of pages requires the author to provide an author name. Otherwise, authors can post without a name.  # require authors to provide a name $EnablePostAuthorRequired = 1;


$DiffKeepDays The $DiffKeepDays variable sets the minimum length of time that a page's revision history is kept. By default it is set to 3650 days, or a little less than ten years. You can change this value in a customization file to be something smaller, e.g.:
        $DiffKeepDays = 30; # keep revisions at least 30 days  Note that a specific page revision isn't removed from the page until the first edit after the time specified by $DiffKeepDays has elapsed. Thus, it's still possible for some pages to have revisions older than $DiffKeepDays -- such revisions will be removed the next time those pages are edited. $DeleteKeyPattern
The pattern used to determine if a page should be deleted. The default is to remove pages that contain only the single word "delete" (and optional spaces).
        # change delete word to "remove"
$DeleteKeyPattern = "^\\s*remove\\s*$";
# delete any page with no visible text, i.e., empty
$DeleteKeyPattern = "^\\s*$";


$EditTemplatesFmt Name of the page (or an array of names) to be used as the default text for any newly created pages.  # Use 'Main.NewPageTemplate' as default text of all new pages$EditTemplatesFmt = 'Main.NewPageTemplate';
# Use 'Template' in the current group for new pages
$EditTemplatesFmt = '$Group.Template';
# Use 'Template' in the current group if it exists, otherwise
# use 'Main.NewPageTemplate'
$EditTemplatesFmt = array('$Group.Template', 'Main.NewPageTemplate');


$DefaultPageTextFmt The text that should be displayed when browsing non-existent pages.  $DefaultPageTextFmt = 'Page $Name does not exist';  $EditFunctions
This array contains the sequence of functions that are called when a page is edited. It can be customized to provide additional functions to be called as part of the editing process. The standard setting is:
        $EditFunctions = array('EditTemplates', 'RestorePage', 'ReplaceOnSave', 'SaveAttributes', 'PostPage', 'PostRecentChanges', 'PreviewPage');  $ROSPatterns
With this array you can give a pattern as key and a text which should replace it when saving an edited text. See Cookbook:ROSPatterns for examples.

$IsPagePosted Set to a true value if the page is actually saved (e.g., this is used to tell the Recent Changes handlers if they need to update). $PageEditFmt
By default, this is the HTML to be displayed for an edit form.

$HandleEditFmt Like$HandleBrowseFmt, this specifies the entire output format for ?action=edit for a page.