"d" partition - incorrect explanation in handbook/install?

[Denis Peplin]

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Hello!

This is the part of books/handbook/install/chapter.sgml:

<entry>Partition <literal>d</literal> used to have a special
~  meaning associated with it, although that is now gone.  To
~  this day, some tools may operate oddly if told to work on
~  partition <literal>d</literal>, so
~  <application>sysinstall</application> will not normally create
~  partition <literal>d</literal>.</entry>

I have a fresh FreeBSD installation, and /var is mounted on ad0s2d:
$ mount | grep ad0s2d
/dev/ad0s2d on /var (ufs, local, soft-updates)

What is wrong (install chapter, sysinstall, something else)? 

Thanks!
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