igor and xmllint

[Christoph Brinkhaus]

Hello,

I have read the fdp-primer but I am not sure about
the verification of xml files.

In the quick start section igor is mentioned which
works well. Unfortunaltely I have overlooked it first
because it is just mentioned once.

In the other sections the files are checked by xmllint.
On by system I have problems with xmllint. Even the self
generated file a.txt can not be checked as below:

xmllint --valid --noout /home/chris/Projekte/a.txt 

The response is

/home/chris/Projekte/a.txt:2: validity error : Validation failed: no DTD found !
<info>abc</info>
     ^


Does igor included the functions of xmllint or not?
Is it necessary to verify a document ifirst by xmllint 
and then by igor? Or is the test using igor enough?

I am using FreeBSD for about one year. Therefore I am not
able to generate big documents which are valuable in terms
of the content.

I can help in changing docuemnts and by translating to German.

Kind regards,

Christoph