# PURPOSE OF THE EXERCISE:
## How to calculate metallic system, i.e., Aluminum bulk
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Exercise consists of two examples:

* `ex1.degauss/` -- this example explores various smearing schemes,
                    i.e., *how-to-smear* (variables `occupations` and
                    `smearing`) and *how-much-to-smear* (variable
                    `degauss`).

* `ex2.chdens/` -- this example shows how to plot the electron charge density
