How is UVM_Class_Reference.pdf generated from HTML.

Hi,

Apologies for posting a non-technical query.

I have generated a html documentation for my internal project using natural docs using help from the previous forum post http://forums.accellera.org/topic/524-how-is-uvm-base-class-documented/ . Now I want to generate a more portable form of document (PDF/DOC) from the html output.

I have tried searching web and also posted query on Natural Doc forum but to no avail. Adobe Acrobat and MS-Word doesn't give satisfactory results. It would be really helpful if someone can provide few pointers on same. 

Thanks and Regards

Deepak