Here is a list of files that you can directly modify the source of.
supporttrio/context All files in this folder can be modified. A file for each page of the public section. IE: adding a ticket, troubleshooting page, etc..
supporttrio/functions context.php > Switch file function_custom.php > Function file for ticket id format, etc.. function_global.php > General public functions. function_user.php > Public user authentication
supporttrio/index_login.php Login processing for public users
supporttrio/attach.php
supporttrio/download.php
supporttrio/html.php
supporttrio/randomimage.php
Please note that you can always modify every file in the templates/ and admin/templates directory.
