/// <summary>
/// Opens the syntactical rules manager.
/// </summary>
/// <param name="sender">
/// A <see cref="System.Object"/>
/// </param>
/// <param name="args">
/// A <see cref="EventArgs"/>
/// </param>
private void OnSyntacticalManagerItemActivate(object sender,
EventArgs args)
{
SyntacticalRulesManagerDialog dialog =
new SyntacticalRulesManagerDialog(this.Window);
dialog.Show();
dialog.Destroy();
}