def enable_com(wellu, wellv, fieldx, fieldy, enable):
    """Enable a field in a well.

    Return a list with parts for the cam command.
    """
    wellx = str(wellu + 1)
    welly = str(wellv + 1)
    fieldx = str(fieldx + 1)
    fieldy = str(fieldy + 1)
    return [('cmd', 'enable'), ('slide', '0'), ('wellx', wellx), ('welly',
        welly), ('fieldx', fieldx), ('fieldy', fieldy), ('value', str(
        enable).lower())]
