Return the valu of a given property on the node.

    Args:
        pode (tuple): A packed node.
        prop (str): Property to retrieve.

    Notes:
        The prop argument may be the full property name (foo:bar:baz), relative property name (:baz) , or the unadorned
        property name (baz).

    Returns:

def prop(pode, prop):
    '''
    Return the valu of a given property on the node.

    Args:
        pode (tuple): A packed node.
        prop (str): Property to retrieve.

    Notes:
        The prop argument may be the full property name (foo:bar:baz), relative property name (:baz) , or the unadorned
        property name (baz).

    Returns:

    '''
    form = pode[0][0]
    if prop.startswith(form):
        prop = prop[len(form):]
    if prop[0] == ':':
        prop = prop[1:]
    return pode[1]['props'].get(prop)