The button descriptions are:
NEW Enter your own puzzle from newspapaer, magazine, or puzzle books by touching the square that you want to enter or by pressing the number on the keypad
LOAD Retrieve your saved puzzle from memory to continue solving the puzzle
GET Play a puzzle from the puzzle database
VIEW View the scrolling screen graphics
SAVE Save your puzzle to memory to continue solving later
PEEK After selecting a box, pressing PEEK shows 1 valid number in the puzzle solution
to help you solve the puzzle
TEST Tests your puzzle solution or partial solution and displays OK if your solution is
valid. If your solution or partial solution is not correct any invalid numbers are
shown with a red background. Pressing PEEK can make these numbers valid
as explained above.
GO Pressing this button will solve your puzzle. SOLVED will be shown if the puzzle was
solved correctly. ERR will be shown if SudokuHelper could not solve your puzzle.
SHOW Pressing this button shows your puzzle solution. Press the BACK button to
return to solving your puzzle.