sveerara

@cbolisetti, the above format looks great. It does look much simpler than our current input file. I think the BCs block should also contain variable or coordinate direction as input....

@cbolisetti, i like both your suggestions and Andrew's suggestions on editing the documentation. Should a test be added to check whether the theory and user documentation file exists for each...

Oh, I din't think about that. Yes, I guess we can just check manually.