Should work with the other Sharp based roms, not sure about other ROMs.
Forgot to mention the print option, really neat function.
Ae we are talking ZaurusShot, might as well mention the remaining function (T) I think. This copies text over to the Zaurus. Useful if you just want to grap some text for reference etc.
For better instructions, you could \"read\" the Japanese Acrobat file by copy pasting into something like altavista. Does work, I did it myself the other day to find out what the (T) function was for.