Template:Random box-header subpage/doc

The template functions similarly to random portal component, but is instead made part of the box header template for the portal. Thus all sections of the portal will be configured to randomly display content from the various Portal:Foo/Selected bar sub-pages. The negative side of this is that all sub-pages will be configured to use the same parameters, thus if there are more images than articles, it will not display the whole image set or it will show redlinks in place of content.

Usage
This template can be placed at a portal's ..box-header/ subpage in order to transclude a numbered subpage, e.g., of Portal:Box-header, that is randomly selected between the "start"-numbered subpage and the "end"-numbered subpage as follows:

The required set of parameters is as follows:

This allows the box title and edit link to be passed on to the applicable box-header templates.

Optional parameters include the following:

Parameters

 * 1: (required as is) The box name as specified on the portal page.
 * 2: (required as is) The edit link as specified on the portal page.
 * page: (optional) The name of the page to be displayed (without the subpage number, e.g., Portal:Foo/box-header/). The default is Portal:Box-header/.
 * start: (optional) The starting subpage number. Must be a positive integer. The default is 1.
 * end: (optional) The ending subpage number. Must be a positive integer. The default is 42.
 * seed: (optional) The default seed is 2 and can be set to any other integer value (used to generate distinct values on the same page). Prime numbers work best, such as 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, and 113.
 * watch: (optional) Any value will call the use of Portal:Box-header-watch. The default is Portal:Box-header. Note. The called subpage must include the associated parameter, such as at Portal:Box-header/1 and its related subpages.