<para>Other major changes since the fork from &CMUCL; include
<itemizedlist>
<listitem><para>&SBCL; has dropped support for many &CMUCL; extensions,
- (e.g. remote procedure call, Unix system interface, and X11
- interface).</para></listitem>
+ (e.g. IP networking, remote procedure call, Unix system interface, and X11
+ interface). Some of these are now available as contributed or
+ third-party modules.</para></listitem>
<listitem><para>&SBCL; has deleted or deprecated
some nonstandard features and code complexity which helped
efficiency at the price of maintainability. For example, the