The documentation is an important part of the package. It was written in the DocBook XML. So, you need installed a xml pre-processor, jade and jadetex for ps/html, pdfjadetex for pdf and xsltproc for html version of the document. Alternatively, you can use Mozilla or Opera to view this document directly as a simply structured xml. Please, ignore errors due to missing jade, jadetex, pdfjadetex, xsltproc or DocBook during compilation (the switch -i can be useful). The Nightview will be correctly work without any documentation.
You can tune some parameters for documentation. The variable JADEHTML in doc/Makefile control the html generation by jade (set to 1) or XSL preprocesor (set to 0). Try and use nicer alternative for you. Please, set additional variables (XSL and DSSSL stylesheets) to your system dependend values, if you have another of system directories than I have.
The full documentation is also available from Nightview homepage.
I've a problems with generating of mathematical formulaes from XML document. The doc directory conatins hack folder with "small hack" for its. It's the modified version of the dbtexmath. I'm calling for a better solution of XML wizards.