{{mosnav}} is a template that puts a navigation strip, at the top of a page. It should be used only on pages of the manual of style; hence: mosnav.
Usage
To use, follow this simple pattern:
{{mosnav|p=parent chapter name|c=category name}}
Often, but not always, p and c have the same value, as can be seen at T:COMMA. Both p and c must be defined for the template to work properly.
The template will produce a navigation scheme which automatically includes all pages in the category specified.
Optional feature
Sometimes, certain pages in the manual of style will have relevance to other parent chapters. In this case you can add the variable you may= to suggest links to other chapters. A good example of this usage can be found at Tardis:Naming conventions. Note that this {{{you may}}} is a little different from the template {{you may}} in that it is entirely free-form. Since the cases where you'd need to employ the variable you may are relatively rare, it was important to give maximum flexibility. The downside is that you have to remember to add linking brackets, like this:
{{mosnav|p=parent|c=category|you may=[[this page]] or [[that page]]}}
Historical note
This template was entirely redesigned and automated at 01:47, February 18, 2013 (UTC). Prior to this date, it was necessary to add each and every page to the template by hand. Thus, you will still find a number of pages that contain a number of superfluous parameters. These do not work, but it is not imperative to remove them, since they are harmless. The only things this template requires are values for p and c.
Thanks
This template's name and earliest function owed a debt to memoryalpha:template:mos nav. However, its code doesn't barely resembles that MemAlpha template much anymore.