How to Install Reftagger on Drupal
Drupal
  1. Log in to your Drupal admin panel.
  2. Click on "Site Building," and then "Blocks".
  3. Click on "Add block"
  4. Copy and paste the Reftagger script in a new block. Give it a name you'll remember, such as "Reftagger."
  5. Change the input format to full HTML
  6. Save the block
  7. Activate your block as a footer block, and every reference on your site will be tagged.
Read other tutorials