Note: When submitting results to the NMDP using HML, as illustrated in the examples below, the following DOCTYPE definition is required at the top of each file:
<!DOCTYPE hml PUBLIC "-//NMDP//DTD HML 0.3.3//EN"
The purpose of this DTD definition line is twofold: first, it provides validating parsers with a URL where the HML DTD can be found; second, it specifies which version of HML should be used to parse the document. This will become more important in the future as subsequent versions are released. Please consider this in any automation/development activities.
Information about DTDs and XML in general may be found on the W3C Web site at http://www.w3c.org/XML.