[themes] Adding custom link tags to page head

[Bruce Whealton]

Hello all,
          I've been learning how to code themes including using the .info file and the page.tpl.php and node.tpl.php and the variables that can be set.  So, I want to add a link in the head section of the page, above the body tag.  There is the variable $header that seems to handle all of this.  This is set in the template.php file.  So what is the best practice for hardcoding a link.  I want to link to a foaf file.  So, I'm not sure, should I go into the template.php file and edit the $header variable or can I just add the link tag to the page.tpl.php right after the call to display the variable or maybe right after?
Thanks in advance for any help,
Bruce 

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