function mymodule_content_extra_fields($type_name) {
if ($type_name != 'blog') {
return;
}
$extras = array();

$extras['add_comment'] = array(
    'label' => t('Add comment'),
    'description' => t('Content section') . ': ' . t('Link to the new comment form'),
    'weight' => 0,
    );

$extras['plus1_widget'] = array(
    'label' => t('Recommend'),
    'description' => t('Content section') . ': ' . t('Link to recommend node'),
    'weight' => 0,
    );

$extras['tweetmeme'] = array(
    'label' => t('Retweet'),
    'description' => t('Content section') . ': ' . t('TweetMeme button'),
    'weight' => 0,
    );

$extras['service_links'] = array(
    'label' => t('Save and Share'),
    'description' => t('Content section') . ': ' . t('Service Links buttons'),
    'weight' => 0,
    );

$extras['print_links'] = array(
    'label' => t('Print Links'),
    'description' => t('Content section') . ': ' . t('Print Links?'),
    'weight' => 0,
    );

$extras['see-more'] = array(
    'label' => t('See more'),
    'description' => t('Content section') . ': ' . t('See more posts Links'),
    'weight' => 0,
    );

$extras['categories'] = array(
    'label' => t('Categories'),
    'description' => t('Content section') . ': ' . t('Term links from Categories'),
    'weight' => 0,
    );

$extras['related'] = array(
    'label' => t('Related research'),
    'description' => t('Content section') . ': ' . t('List of related research'),
    'weight' => 0,
    );

return $extras;
}

Nancy

Injustice anywhere is a threat to justice everywhere. -- Dr. Martin L. King, Jr.

From: Karl Giesing <khzmusik@hotmail.com>
To: development@drupal.org
Sent: Wed, January 26, 2011 11:39:51 PM
Subject: [development] Making custom fields available to CCK administration menus

Hi, this is Karl Giesing, aka Karlheinz. I'm the developer of the Discogs module:
http://drupal.org/project/discogs

I have a user who uses CCK, and would like to administer the fields I created, using CCK's "Manage Fields" and "Display Fields" menus. I did NOT create the fields using CCK, and was wondering if this is possible.

Any ideas? I haven't found any documentation on how to do this.

-Karl.