def add_column(content, col_index, col_info=[]):
    """
    From the position of the cursor add a column

    Arguments:
        - the table content, a list of list of strings:
             - First dimension: the columns
             - Second dimensions: the column's content
        - cursor index for col
        - optional information to append from command line
    Returns:
        - the table content, a list of list of strings:
             - First dimension: the columns
             - Second dimensions: the column's content
    """

    col_size = len(content[0])
    content.insert(col_index, [""] * col_size)
    return content