This is the latest flag info I have.
Lois
 
81 - ACK (A), NOACK (a), MSGACK (M)
82 - MAIL (M), NOMAIL (m)
83 - FILES (F), NOFILES (f)
84 - NOREPRO ( ), REPRO (R)
85 - SHORTHDR ( ), FULLHDR (F)
 
86-87 subscription year (yy) or deletion year (yy)
88-90 subscription day (ddd) or deletion day (ddd)
 
91 - normal ( ), deletion pending (D), confirmation waived (W)