checkXML6 User's Manual
checkXML6
An lint tool for DocBook documents
checkXML6 filename

Description
checkXML6 is a tool to check for syntax errors in DocBook files. It can also be used for other DocBook based files, but you should use the less specific xmllint(1) tool if you are not writing or otherwise working on documentation.

See Also
meinproc6(1) xmllint(1)