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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def format(element):
 """Formats all of the docstrings in the specified element and its children into a user-friendly paragraph format for printing. :arg element: an instance of fortpy.element.CodeElement. """

    result = []
    if type(element).__name__ in ["Subroutine", "Function"]:
        _format_executable(result, element)
    elif type(element).__name__ == "CustomType":
        _format_type(result, element)
    elif isinstance(element, ValueElement):
        _format_value_element(result, element)

    return '\n'.join(result)