Initial Action [InitCheckBox]

There is sometimes a need to give the user some option about some action when the Wizard starts.  The WizardEngine provides a method InitCheckBox for this purpose.  It takes three parameters:

•        Value      the initial value for the checkbox, and the returned value

•        Message    the message/label attached to the checkbox

•        Enable     if True, then the checkbox is displayed.

This method should only be called from the initial state (it will be disabled otherwise). 

Init [
  { Initial step }
  Engine\InitCheckBox(tellme, "Tell me about alternatives to this Wizard", Valid(tellme));
  If Move;
  [
    ForceState(NextState);
    IfThen(Move == Forward,
    .. .. ..