extend existing dtd

[Andreas]

Hi guys,

I am fairly new to XML, so please forgive me if this questions is really
simple:

is there a possibility to extend existing DTDs? I would like to base my XML
DTD on the existing http://www.w3.org/TR/html4/loose.dtd, but I want to add
a few more elements. Is that possible to do and if so, what would be the
easiest way to do it? I mean, without cutting and pasting the entire W3 DTD
into my own file?

Thanks heaps!

[Soren Kuula]

Andreas wrote:

Hi guys,

I am fairly new to XML, so please forgive me if this questions is really
simple:

is there a possibility to extend existing DTDs? I would like to base my XML
DTD on the existing http://www.w3.org/TR/html4/loose.dtd, but I want to add
a few more elements. Is that possible to do and if so, what would be the
easiest way to do it? I mean, without cutting and pasting the entire W3 DTD
into my own file?

Internal subsets might work for you ?

<!DOCTYPE foo PUBLIC "..." "..." [
<!ElEMENT my_first_new_element....>
...
]>

<foo>
....
</foo>

But you have to include that into every XML document then,

I think there is no other solution.

Soren

[Soren Kuula]

Andreas wrote:

Hi guys,

I am fairly new to XML, so please forgive me if this questions is really
simple:

is there a possibility to extend existing DTDs? I would like to base my XML DTD on the existing http://www.w3.org/TR/html4/loose.dtd, but I want to add a few more elements. Is that possible to do and if so, what would be the
easiest way to do it? I mean, without cutting and pasting the entire W3 DTD into my own file?

Internal subsets might work for you ?

<!DOCTYPE foo PUBLIC "..." "..." [
<!ElEMENT my_first_new_element....>
...
]>

<foo>
....
</foo>

But you have to include that into every XML document then,

OR look in the thread below, "why does a browser...". Maybe you can
include two external entities?

Soren