- HTML Admin-Manual
- PDF Admin-Manual
- HTML ITSM-Manual
- PDF ITSM-Manual
- HTML Developer-Manual
- PDF Developer-Manual
- HTML Developer-API
3.3. Core Modules
Core modules are located under $OTRS_HOME/Kernel/System/*. This layer is for the logical work. Core modules are used to handle system routines like "lock ticket" and "create ticket". A few main core modules are:
Kernel::System::Config (to access config options)
Kernel::System::Log (to log into OTRS log backend)
Kernel::System::DB (to access the database backend)
Kernel::System::Auth (to check a user authentication)
Kernel::System::User (to manage users)
Kernel::System::Group (to manage groups)
Kernel::System::email (for sending emails)
For more information, see: http://dev.otrs.org/

