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<A HREF="compile.html"><FONT COLOR="#FFFFFF">1 Compile</FONT></A><BR>
<A HREF="design.html"><FONT COLOR="#FFFFFF">2 Design</FONT></A><BR>
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<P><FONT SIZE="5">4.2 Authority vs User Security</FONT><BR>
<P>There are a number of ways of providing the strong
central design authority required to produce the portability
and semantic security desired by users,
<P>
<UL>
<LI> Trade mark the name of the
language. Publish a specification of the language under the
trade name. Warn all users not to trust any implementation
that does not guarantee that it implements the language.
Then control implementations by only licensing the trade
mark to conforming implementations.
<LI> Create a single implementation of the language. Do
not release the source code to the implementation. Release
only binary executables.
<LI> Release the source code to the implementation, but
under a license that prohibits the distribution of modified
versions.
</UL>
<P>Many other variations on these themes are possible, but
they are all based on the idea of regulating either the
"official" definition of the language or all of its
existing implementations.
<P>The solution that I (<A HREF="http://www.ross.net/">Ross Williams</A>
(<A HREF="mailto:ross@ross.net">ross@ross.net</A>) have adopted (in 1992)
is to release the FunnelWeb source code under a GNU license
and then to write this chapter in this manual to encourage
programmers to think hard if they make any changes to the
language.
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