Changing an include file will affect all the pages that link to it such as a navigation bar. Suppose you want certain pages to display a certain navigation bar not available on other pages. Which is the BEST method to do this?
Write a separate include file for those unique pages.
Forget the include file. It is easier to just put the unique menu in using HTML code.
Have the include file test for the type of page and then print out the correct menu.