Adopting XML: Slide 31

Adopting XML: Tomorrow's Web

Do I have to use a DTD

As with HTML, you don't have to specify a DTD.
Even if you define new markup...
... but client programs won't know how to interpret your new markup unless you also define a DTD.
As with HTML, you should specify a DTD...
... and we all do, don't we, children?

Author: Simon Brooke