Suggested Writing Style

Hi,

Is there any suggested writing style for DocBook?
May I know what the main stream is for this following:

(a)
<para>Blah... Blah... Blah sentences.</para>

(b)
<para>
Blah... Blah... Blah... sentences.
</para>

(c)
<para>
   Blah... Blah...
   Blah... sentences.
</para>

(d)
Other:
. . .

How about itemized sentences?

regards,

-- 
EL6