Interestingly, CiviCRM optionally uses <code>[http://wkhtmltopdf.org/ wkhtmltopdf]</code> to convert HTML to PDF
== Upgrading ==
There is a long guide on [http://wiki.civicrm.org/confluence/display/CRMDOC/Upgrading+CiviCRM+for+Drupal+7 how to upgrade CiviCRM for drupal] but the short version is
# backup your database(s) [[Mysqldump]]
# download the code <code> wget https://download.civicrm.org/civicrm-4.6.5-drupal.tar.gz</code>
# move old code, and unpack new code <code>mv civicrm /tmp/ && tar xvzf civicrm-4.6.5-drupal.tar.gz</code>
# run the upgrade script <code>/civicrm/upgrade?reset=1</code>
# toast
== Profiles ==