Improve documentation.

I got lost in the tutorial at "Update your theme or other php code to display taxonomy images. To display a taxonomy image from your theme or other php code, add a call to the taxonomy_image_display function. "

Where should i add this call? From what I found, it should be in the template.php file, diurectly below the _phptemplate_variables. This is the result:

function _phptemplate_variables($hook, $vars = array()) {
// Start taxonomy_image display
if ($hook == 'node') {
if (module_exist("taxonomy_image")) {
foreach (taxonomy_node_get_terms($vars['node']->nid) as $term) {
$vars['taxonomy_images'][] = taxonomy_image_display($term->tid, "alt='$term->name'");
}
}
}
return $vars;
}
// End taxonomy_image display

// Get the currently logged in user
global $user;
// Rest of the phptemplate variables function
...

Is that correct? Thanks!