/// <summary>
/// Handles the <see cref="CommandBinding.Executed"/> event for the <see
/// cref="ApplicationCommands.Help"/> command.</summary>
/// <param name="sender">
/// The <see cref="Object"/> where the event handler is attached.</param>
/// <param name="args">
/// An <see cref="ExecutedRoutedEventArgs"/> object containing event data.</param>
/// <remarks>
/// <b>HelpExecuted</b> opens the application help file on the help page for the <see
/// cref="AboutDialog"/>.</remarks>
private void HelpExecuted(object sender, ExecutedRoutedEventArgs args)
{
args.Handled = true;
ApplicationUtility.ShowHelp("DlgAbout.html");
}
