def improve_reportstr_readibilty(src):
    """
        improve_reportstr_readibilty()
        ________________________________________________________________________

        Improve the readibilty of the (str)src so that this string may be
        easily read in a report.
        ________________________________________________________________________

        ARGUMENT:
        ▪ src   : (str) the string to be returned, slightly modified

        RETURNED VALUE : the expected (str)string.
    """
    src = src.replace(' ', '_')
    return src
