Help Menu
The "Help" menu is auxiliary. Execution of this menu commands does not influence the terminal operation in any way. One can do the following from this menu:

Help Topics — open the in-built help files containing this present "Userguide". All settings and functions of the Client Terminal are described in it.
F1 button performs the same action;

About... — open the "About..." window where one can find information about the company, its contact details, and the terminal version, as well.