Some portions of RISC OS are licenced in a manner which requires the source code should be made available. This page provides links to archives which include RISC OS source code.
The terms of Netscape Public Licence (the "NPL") states that modifications of
code under that licence must be made available through an Electronic
Distribution Mechanism. To this end, you can find a copy of both the NPL and
the relevant source files for this component here.
The source may not comprise a compilable component and is supplied without any
warranty.