// Text can be any number of lines.
// Last line of an item starts with a :  and may specify a figure file.
// Elaborations are enclosed in braces.

Please identify the changes in the values of the variables in the program.
: 
{
   Study the code in the left panel. 
   : readCode.gif
   
   For each variable <b>and</b> line number listed below:
   : variable.gif
   {
      Enter any <b>changes</b> in its values
      : enterValues.gif

      For your reference, values of the variable after a previous line <it>may</it> be shown
      on the left - you cannot modify them.
      : oldValues.gif

      If you want to start over entering values, click on <it>Restore old values</it> button
      : startOver.gif
   }           

   Your answer <B>may be</B> color-coded.<BR>
   If a value that you enter has <GR>green</GR> background, it is correct.<BR>
   If it has <RD>red</RD> background, it is incorrect.
   : errorflag.GIF 

   After identifying all the changes in the values of all the variables, 
   click on the <it>Submit Answer</it> button.
   : submitAnswer.GIF

   If there is no change in any of the values of the variables, click on <it>No Changes</it> button.
   : noChanges.gif
}

// If the 'play' button is provided, click on it to step through the feedback.
// animate.GIF

// Carefully read the feedback provided in the right panel. Scroll if necessary.
// feedback.GIF

// Finally, click on the "Next Problem" button to generate the next problem and start over.
// newProblem.GIF