There are times when you want to allow the Super Admin to edit those extra fields but not the editors/contributors of your site so this is one way to do it:
PHP:

< ?php
/**
* Change the node form
*/
function phptemplate_node_form($form) {
  // echo "<div style=’direction:ltr;’>"; dprint_r ($form); echo ”;
 
  // Hide ‘Log message’ text area
  $form[’log’][’#access’] = [...]