examples of sets of documents

here are two examples

Muse Test Suite, Part 1 Test Objectives (link) & Part 2 Test Methods (link).  
Published together on Jan 6, 2006. Labeled as a set in 1.1 Scope.

User Guide to Audio editing with Audacity, Part 1 (link) & Part 2 (link). 
Published together in 2009 and labeled as a set in Part 2.




Gregg