I've understood the metheg to indicate that the vowel to which it is attached
is to be given its fullest possible value. The need for this comes from the
syllables and phonetic values around the vowel which might lead one to think
that the vowel should be shorter.
Regards,
GEORGE ATHAS
Moore Theological College (Sydney)
Ph: 9577 9774. Mob: 0449 758 100
www.moore.edu.au