- Add a non-breaking space where needed.

- Reword "15+" and "5.0+"
- Use right inline tags for a kernel configuration line.

en_US.ISO8859-1/books/handbook/config/chapter.sgml

@@ -1627,7 +1627,7 @@ device_probe_and_attach: cbb0 attach returned 12</screen>
 
  	<para>There are various other buffer-cache and VM page cache
  	  related sysctls.  We do not recommend modifying these values.  As
- 	  of &os; 4.3, the VM system does an extremely good job of
+ 	  of &os;&nbsp;4.3, the VM system does an extremely good job of
  	  automatically tuning itself.</para>
        </sect3>
 
@@ -1687,20 +1687,20 @@ device_probe_and_attach: cbb0 attach returned 12</screen>
       </sect3>
 
       <sect3>
-	<title><option>SCSI_DELAY</option>
+	<title><literal>SCSI_DELAY</literal>
 	(<varname>kern.cam.scsi_delay</varname>)</title>
 
 	<indexterm>
-	  <primary><option>SCSI_DELAY</option></primary>
+	  <primary><literal>SCSI_DELAY</literal></primary>
 	  <secondary><varname>kern.cam.scsi_delay</varname></secondary>
 	</indexterm>
 
-	<para>The <option>SCSI_DELAY</option> kernel config may be used to
+	<para>The <literal>SCSI_DELAY</literal> kernel config may be used to
 	  reduce system boot times.  The defaults are fairly high and can be
-	  responsible for <literal>15+</literal> seconds of delay in the
+	  responsible for <literal>15</literal> seconds of delay in the
 	  boot process.  Reducing it to <literal>5</literal> seconds usually
 	  works (especially with modern drives).  Newer versions of &os;
-	  (5.0+) should use the <varname>kern.cam.scsi_delay</varname>
+	  (5.0 and higher) should use the <varname>kern.cam.scsi_delay</varname>
 	  boot time tunable.  The tunable, and kernel config option accept
 	  values in terms of <emphasis>milliseconds</emphasis> and
 	  <emphasis>not</emphasis> <emphasis>seconds</emphasis>.</para>