Looking for Schema for Requirements and Specifications Manual(s)

Hello all,

I am looking for a schema that would outline the structure of a Requirements and Specifications Manual.  Those of you who have worked in the Military arena would be familiar with what I am talking about.  Documents with such glorious titles as
	(SRS) - Systems Requirements and Specifications for system xxx
	(SDDD) - Software Detailed Design Document for system xxx

There was a document MIL2167a I believe that is a structure for representing hardware parameters and functional test that a system must take in to account (environmental specs, electrical specs, vibration specs, etc...)

Thanks in advance, 
Clayton.


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