Reva: Login/Logout

Visitors may enter anonymous as the user-ID with the 8-character hexadecimal password shown below:

 _  _     ___   _____   ___   _  _             ____    _____ 
| || |   / _ \ |  __ \ |__ \ | || |     /\    |___ \  / ____|
| || |_ | (_) || |  | |   ) || || |_   /  \     __) || |     
|__   _| > _ < | |  | |  / / |__   _| / /\ \   |__ < | |     
   | |  | (_) || |__| | / /_    | |  / ____ \  ___) || |____ 
   |_|   \___/ |_____/ |____|   |_| /_/    \_\|____/  \_____|