is no known compatible PCMCIA sound card for the HP 200LX. However, a Yamaha MU10 MIDI sound generator (a.o.) works through the serial port using Voyetra or GSPlay MIDI programs, and Terrence Vergauwen uses a PCMCIA parallel port card plus an OPL3LPT (Adlib compatible sounds card thru parallel port) for gaming. Software and hardware is available which will allow the HP 200LX to surf the Internet. The serial numbers printed on the HP machines 100LX, 200LX, 1000CX and OmniGo 700LX have the following meaning: XXYWWNNNNN XX = the country of manufacturing (e.g., SG = Singapore etc) Y = the year of manufacturing; last digit (e.g., 6 = 1996) WW = the week of the year of manufacturing NNNNN = the number of the specific unit manufactured in specified week Easter eggs There are many easter eggs built into the HP 200LX. The known ones are listed as follows: Hidden gallery This easter egg is on the HP 200LX in the built in game, "Lair of Squid". During the startup screen of the game, if the user types the word "gallery" ("gallerie" on a French palmtop; "siegergalerie" on a German palmtop; "galeria" on a Spanish palmtop) they are placed in a "part" of the maze that contains photographs of the primary software developers that worked on the HP 200LX. The user may exit from this gallery by exiting through the door at the end of the corridor. The software developers in the photographs are listed starting from left to right, then left to right and so on as follows: Andy Gryc Pat Megowan Everett Kaser Bill Johnson Lynn Winter Susan Wechsler Eric Evett The last panel on the right of the corridor contains a thank you message: The photographs of the developers have been described as "a-maze-ing". Self-test poem 1 This easter egg is in the HP 200LX self test mode. With the palmtop powered off, the user may press [ESC][ON] to start the self test mode, then cursor down to the display option. On pressing [ENTER] 14 times, to step through the various screens, the user comes to a screen of example text in the form of a limerick poem. The poem is as follows: Self-test poem 2 This easter egg is in the HP 200LX self test mode. With the palmtop powered off, the user may press [ESC][ON] to start the self test mode, then cursor down to the