Where is navigation set in WordPress

Hello Experts - I am new to Wordpress, and know less about php, and am unclear about how to set the main navigation - I added a page which has a parent of one of the top level pages, but now its title is showing up in the main navigation. I'm not seeing where to remove this - can you help?

Thanks  
Steve
tablaFreakAsked:
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Jason C. LevineConnect With a Mentor No oneCommented:
It's not a hack :)  If the theme uses wp_list_pages(), this is how you have to go about it.

>> any idea how the less saavy are expected to go about that

See my first post.  It really is dependent on the theme you are using.  A well-developed theme should have support for custom menus via the wp_nav_menu() function (http://codex.wordpress.org/Function_Reference/wp_nav_menu).

So apparently my assumption was wrong and whomever developed this theme just took a shortcut (or developed it a long time ago, before custom menus were supported).  The "better" answer would be to add the code for the custom menus and use wp_list_pages() as a fallback (via the fallback_cb parameter) if no custom menu is defined.  Alternately, wp_page_menu() is the function that would automatically be used if no custom menu or custom fallback param is found by wp_nav_menu().
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Jason C. LevineNo oneCommented:
It is theme dependent.  A good WordPress theme has an area for navigation defined in the header.php file.  This area checks to see if you have a custom menu defined (Appearance | Menus) and if so, it uses that menu.  If no menu is defined, a really well-developed theme will use a function to output a list of pages so that there is some form of navigation present. There are also themes that come with their own menu builders but this is getting rarer as the custom menu feature in the core improves.

So my guess is that you have a pretty good theme where it is looking for a custom menu and not finding one, so it is defaulting to all pages. Define a custom menu and see if it overwrites.  
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tablaFreakAuthor Commented:
Hi Jason - Thanks for that, I found this call in home.php:

<?php wp_list_pages('title_li=&exclude=38,103,82,104,121,145,148,151,127,206,271,448'); ?>

but I don't know where that function is defined, or how to set pages to appear or not appear in the main navigation. It looks like certain pages are excluded there, by ID (?) but I don't know where to find the ID of the page I want excluded from the top nav.

Thanks for your help.
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Jason C. LevineNo oneCommented:
wp_list_pages is a core function: http://codex.wordpress.org/Function_Reference/wp_list_pages

To find a Page ID, just go to the All Pages screen and hover over or click the Edit link for the page in question.  The ID is visible in the URL.  Once you have that, you add the ID to the exclude array above.
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tablaFreakAuthor Commented:
That did the trick - thanks - but that worked fine as a hack, doesn't WordPress have a better way for a user to manage what's in the navigation? I'll accept your answer as the solution, but do you have any idea how the less saavy are expected to go about that?
Thanks, Jason.
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tablaFreakAuthor Commented:
Gotchya - thanks much for the clarification!
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tablaFreakAuthor Commented:
thanks for your speedy help!
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