def is_full_frame(subarray):
    """Return True IFF `subarray` is defined and has a full frame subarray value.
    
    >>> is_full_frame("UNDEFINED")
    False
    >>> is_full_frame("FULL")
    True
    >>> is_full_frame("GENERIC")
    True
    >>> is_full_frame("N/A")
    True
    >>> is_full_frame("ANY")
    True
    >>> is_full_frame("*")
    True
    >>> is_full_frame("MASK1140")
    False
    >>> is_full_frame("BRIGHTSKY")
    False
    """
    return subarray in ["FULL","GENERIC","N/A","ANY","*"]