User registration page edit
Assuming you're using Drupal 7.

Using hook_form_FORM_ID_alter and a custom module you can achieve it. Like below,

function mymodule_form_user_register_form_alter(&amp;$form, &amp;$form_state, $form_id) {
  $form['links'] = array(
    '#type' =&gt; 'item',
    '#markup' =&gt; l('some links','http://www.example.com'),           
  );
  $form['additional_markup'] = array(
    '#type' =&gt; 'item',
    '#markup' =&gt; '&lt;div&gt;&lt;/div&gt;',          
  );
}