The copyright holder of this file allows anyone to use it for any purpose, provided that the copyright holder is properly attributed. Redistribution, derivative work, commercial use, and all other use is permitted.
	Attribution

You can freely use, modify and distribute the charts as long as you include the original URL (http://www.insula.cz/dali/material/rubycl/ archive copy at the Wayback Machine). There is no warranty that the charts are correct. The class hierarchy was created using Ruby reflection features.