Describes outcome, including validity checks and handling of abnormal situations. 3.2.2 Welcome Screen Description Purpose Input Output Processing Welcome Screen Welcomes the user to the product. Allows the user to begin the tutorial or game. Go to main tutorial screen, game screen, or screen about Grey Matter. If the game or tutorial pages cannot be found, standard error messages will are displayed by the browser specifying the location where the file was expected to be found.
Displays paragraph about the wonders of the cell.
Takes user to tutorial or game depending on which button is clicked. Also provides text links to each structure and to the Welcome Screen. Mouse click on the picture, the text links, or the buttons. Displays the page selected, goes to welcome screen, or goes to game. Display standard browser error message if, for some reason, page cannot be found.