One detail that the lawsuit did clarify is the naming: in the 1980s, BSD was known as
<quote>BSD
<trademark class="registered">UNIX
</trademark></quote>. With the elimination of the last vestige of AT
&T code from BSD, it also lost the right to the name
<trademark class="registered">UNIX
</trademark>. Thus you will see references in book titles to
<quote>the 4.3BSD
<trademark class="registered">UNIX
</trademark> operating system
</quote> and
<quote>the 4.4BSD operating system
</quote>.