Merge command: [strheader-htmlfrontmatter ]
Merge variable/item: strheaderhtmlfrontmatter

Comments:
The DTD vale used for generating the page content. It is the first html sourcecode line. The DTD setting is present on the website document in item ntf_dtdTypes.

Formula:
@text(strheaderhtmlfrontmatter) or @Text($$HTMLFrontMatter)+@NewLine

Example:
< !doctype html >