private void OnMarkingClicked(object sender, MouseButtonEventArgs e)
{
MarkingFlags flag = (MarkingFlags)((Label)((Rectangle)sender).Tag).Tag;
if (markings.HasFlag(flag))
{
markings &= ~flag;
((Label)((Rectangle)sender).Tag).Foreground = unmarkedHoverBrush;
}
else
{
markings |= flag;
((Label)((Rectangle)sender).Tag).Foreground = markedHoverBrush;
}
}
