Official: WCDDL - The DDL Script

[JmZ]

No it is a configuration/setting in the database now.

You use:

Core::load()->config('name', 'value'); 

To set a configuration entry.

The admin_links entry contains an array of admin links, so you could do something like this in your mod:

function myAdminLinks() {
     $links = Core::load()->parseConfig('admin_links');
     $linksCount = count($links);
     $myLinks = array(
          array('?go=myAdmin', 'SomeThing'),
          array('?go=myOtherAdmin', 'Another Thing')
     );
     // I didnt use array_merge because it will allow duplicate entries
     $links = Common::arrayMergeUnique($links, $myLinks);
     if(count($links) != $linksCount)
          Core::load()->config('admin_links', $links);
}
Core::load()->hook('AdminInit', 'myAdminLinks'); 

Yes this is way more complicated than in wcddl2, but it means links are stored.

So you can either use something like the above method, or make a sort of install script, then run it once.

E.g. make an installMyMod() function and hook it so it runs on ?go=installMyMod.