/*

*/
/* 


https://stackoverflow.com/questions/3129099/how-to-flip-images-horizontally-with-html5

Difference between IEnumerator and IEnumerable Interface in C#
Difference between IComparable and IComparer Interface in C#
mutable vs imutable 
finalize vs dispose using 
readonly and constant
polymorphism
Garbage collector
  reflection
    dispose()
    {
        disose(true);
        gc.suppresszfinialzie()
    }
    public void dispose(bool dispose)
   }