content pages question

[syncbox]

In the KB, it says: The look and layout of your main menu is dependant on the template you are using.

But, what file is used to control what these pages look like? I see no place to select a template or any file in the common folder that looks like it is used for other page layout.

Is it the "extrapage.html" file?

[syncbox]

nevermind, I see that it is the extrapage.html file. Thanks anyway

[syncbox]

now my question is whether you can have more than one layout for these extra pages (non-feed type) and how you name and/or indicate the file to use?