Newbie setting up system

Hi, All --

First post, please indulge with your patience...

I'm
using Bob Stayton's excellent book as a how-to.  I have downloaded the
docbook DTD and have just downloaded the docbook stylesheets,
specifically the file docbook-xsl-1.73.2.zip.  My question is whether I
also need to install docbook-xsl-doc-1.73.2.zip and
docbook-xsl-ns-1.73.2.zip?  Can someone briefly mention what these
achieves are for?  Thanks.

Mark Twenhafel

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