Valid - Waikato Linux Users Group

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XML / SGML

When referring to XML or SGML documents, the term Valid means that the document conforms to the DTD or Schema specified or referred to in the header.

You can use the sgmlnorm(1) program to check whether a file validates against its DTD. For example, I use this when creating HTML files. The HTML file starts with: <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">

and then sgmlnorm validates it against W3C's strict.dtd and tells me all my mistakes (having text that's not in <P> or <DIV> tags is one that I keep making). In Debian, this is in the sp package - "sgml parsing tools".