General ⇒ Creating a function reference document using latex

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Hello,

I have developed some sofware and need to create a reference document describing in detail the functions I have written with their input, output, examples of use and other relevent info.

My question is, does anyone know of a latex document class or package that would help me with this? I have done some googling for this, but the kind of terms I need to search for turn up lots of irrelevent info (try 'latex software reference package' for instance).

Thanks,

Richard