The xslTNG stylesheets are a moving target. When this work started, the current release was 2.1.2. At the time of this writing, it is now 2.1.4, and by the time that you read this, the stylesheets will be further updated.
The stylesheets for generating paged media output were less well exercised than the stylesheets for producing web pages. The paged media stylesheets have been improved in response to issues raised while developing the CSS customisation. There are still some open issues, and it is likely that paged media support will be further improved shortly.
There was not much time available for developing the CSS customisation, and it is still a work in progress. The code is
available in the css-proc
branch on GitHub [MUK-xsl] for anyone to copy and
modify. Comments and pull requests are welcome.