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revision 1.79 by rms, Wed May 27 23:03:29 2009 UTC revision 1.80 by rms, Tue Jun 30 12:18:28 2009 UTC
# Line 33  four kinds of freedom, for the users of Line 33  four kinds of freedom, for the users of
33    
34  <ul>  <ul>
35    <li>The freedom to run the program, for any purpose (freedom 0).</li>    <li>The freedom to run the program, for any purpose (freedom 0).</li>
36    <li>The freedom to study how the program works, and adapt it to    <li>The freedom to study how the program works, and change it to make
37        your needs (freedom 1). Access to the source code is a precondition        it do what you wish (freedom 1). Access to the source code is a
38        for this.        precondition for this.
39    </li>    </li>
40    <li>The freedom to redistribute copies so you can help your neighbor    <li>The freedom to redistribute copies so you can help your neighbor
41        (freedom 2).        (freedom 2).
# Line 93  condition for free software. Line 93  condition for free software.
93  </p>  </p>
94    
95  <p>  <p>
96    Freedom 1 includes the freedom to use your changed version in place of
97    the original.  If the program is delivered in a product designed to
98    run someone else's modified versions but refuse to run yours &&mdash;
99    a practice known as &ldquo;tivoization&rdquo; or (through
100    blackwhiting) as &ldquo;secure boot&rdquo; &mdash; freedom 1 become a
101    theoretical fiction rather than a practical freedom.  This is not
102    sufficient.
103    </p>
104    
105    <p>
106  One important way to modify a program is by merging in available free  One important way to modify a program is by merging in available free
107  subroutines and modules.  If the program's license says that you  subroutines and modules.  If the program's license says that you
108  cannot merge in a suitably-licensed existing module, such as if it  cannot merge in a suitably-licensed existing module, such as if it
# Line 285  them if they like.</p> Line 295  them if they like.</p>
295    
296  <ul>  <ul>
297    
298    <li><a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;r1=1.79&amp;r2=1.80">Version
299    1.80</a>: Freedom 1 must be practical, not just theoretical;
300    i.e., no tivoization.</li>
301    
302  <li><a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;r1=1.76&amp;r2=1.77">Version  <li><a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;r1=1.76&amp;r2=1.77">Version
303  1.77</a>: Clarify that all retroactive changes to the license are  1.77</a>: Clarify that all retroactive changes to the license are
304  unacceptable, even if it's not described as a complete  unacceptable, even if it's not described as a complete
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