public override string ToString()
{
StringBuilder buf = new StringBuilder();
if (location.Length > 1)
{
buf.Append(LocationType.ToLocationSymbol(location[Position.Left]));
}
buf.Append(LocationType.ToLocationSymbol(location[Position.On]));
if (location.Length > 1)
{
buf.Append(LocationType.ToLocationSymbol(location[Position.Right]));
}
return(buf.ToString());
}