Description of commands:
1 - Add another server: It lets you add another DayTime server to the list of available servers. The program checks if the server you added really exists and is working, before actually adding to its list.
2 - Remove the server: It deletes the server currently selected from the list of avaible servers. If you remove all server from the list, one by one, don't worry; at the next run of the program, in fact, you'll find one default server (time-a.nist.gov:13) automatically added to the list.
3 - Preferences: Given that the DayTime server could give you the time in a different time zone than yours, this command displays a screen where you can adjust the amount of hours added or subtracted from the hour read from the server.
4 - Informations: It displays the help (what you're reading now).
5 - Read the exact time: This is the most important command, because it contacts the server, and displays the exact hour and time.