DOCBOOK: Questions on <systemitem> and its class Attribute

Hi!

To me it seems that the <systemitem> tag is used as a container where more
specific elements would have been much cleaner (and clearer), but nobody
dared to create more specific markup.

Examples:

- <systemitem class="systemname">
- <systemitem class="username">
- <systemitem class="osname">
- <systemitem class="...">

Why aren't there elements like

- <hostname>
- <username>
- <osname>
- ...

for all the values of the class attribute? <systemitem> as it's used now
just seems like tag abuse.

Thanks for enlightening me on this issue.

Greetings,

	Holger