
Installation:
1. Copy the following new files maintaining the directory structure:
[catalog/]includes/languages/english/modules/pi/product_info/pi_back_button.php
[catalog/]includes/modules/pi/product_info/pi_back_button.php
[catalog/]includes/modules/pi/product_info/templates/pi_back_button.php

2. In: Admin => Layout Modules => Product Info => click "Install Module" => select "Back Button" => click "Install Module"
