diff --git a/en_US.ISO8859-1/books/developers-handbook/book.sgml b/en_US.ISO8859-1/books/developers-handbook/book.sgml
index e183d50227..7dff0e3020 100644
--- a/en_US.ISO8859-1/books/developers-handbook/book.sgml
+++ b/en_US.ISO8859-1/books/developers-handbook/book.sgml
@@ -76,14 +76,6 @@
   <part id="ipc">
     <title>Interprocess Communication</title>
     
-    <chapter id="signals">
-      <title>* Signals</title>
-
-      <para>Signals, pipes, semaphores, message queues, shared memory,
-        ports, sockets, doors</para>
-
-    </chapter>
-
     &chap.sockets;
     &chap.ipv6;
 
@@ -95,40 +87,6 @@
     &chap.dma;
     &chap.kerneldebug;
 
-    <chapter id="ufs">
-      <title>* UFS</title>
-
-      <para>UFS, FFS, Ext2FS, JFS, inodes, buffer cache, labeling,
-        locking, metadata, soft-updates, LFS, portalfs, procfs,
-        vnodes, memory sharing, memory objects, TLBs, caching</para>
-
-    </chapter>
-
-    <chapter id="afs">
-      <title>* AFS</title>
-
-      <para>AFS, NFS, SANs, etc.</para>
-
-    </chapter>
-
-    <chapter id="syscons">
-      <title>* Syscons</title>
-
-      <para>Syscons, tty, PCVT, serial console, screen savers,
-        etc.</para>
-
-    </chapter>
-
-    <chapter id="compatibility">
-      <title>* Compatibility Layers</title>
-
-      <sect1 id="linux">
-        <title>* Linux</title>
-
-        <para>Linux, SVR4, etc.</para>
-      </sect1>
-
-    </chapter>
   </part>
   
   <part id="architectures">
@@ -136,14 +94,6 @@
 
     &chap.x86;
 
-    <chapter id="alpha">
-      <title>* Alpha</title>
-
-      <para>Explanation of alignment errors, how to fix, how to
-      ignore.</para>
-
-      <para>Example assembly language code for FreeBSD/alpha.</para>
-    </chapter>
   </part>
   
   <part id="appendices">