There come several features with named pins:
*   An pin can be configured in the naming either as input or as output.
    The DDRX will be set correctly
*   A Pin can be configured as active {high, low}, so with named pins
    it doesn't matter the real state, but the logic state. An active low
    output is set to low when he is 1/active/on. The same for input pins.
*   You can search an pin by name, so there will follow ecmd support with
    named pins