/* Monster flags */
MPERMT          1        Permanent monster 
MHIDDN          2        Hidden 
MINVIS          3        Invisible 
MTOMEN          4        Man to men on plural 
MDROPS          5        Don't add s on plural
MNOPRE          6        No prefix 
MAGGRE          7        Aggressive 
MGUARD          8        Guards treasure 
MBLOCK          9        Blocks exits 
MFOLLO          10       Monster follows attacker 
MFLEER          11       Monster flees 
MSCAVE          12       Monster is a scavenger 
MMALES          13       Sex == male 
MPOISS          14       Poisoner 
MUNDED          15       Undead 
MUNSTL          16       Cannot be stolen from 
MPOISN          17       Poisoned 
MMAGIC          18       Monster can cast spells 
MHASSC          19       Has already scavenged something 
MBRETH          20       Breath weapon 
MDINVI          22       Detect invisibility 
MENONL          23       Can only be harmed by magic/ench. weapon 
MTALKS          24       Monster can talk interactively 
MUNKIL          25       Monster cannot be harmed 
MNRGLD          26       Monster has fixed amt of gold 
MTLKAG          27       Becomes aggressive after talking 
MRMAGI          28       Monster resist magic 
MBRWP1          29       Type of breath weapon - use bits 29 and 30 
MBRWP2          30       00 =fire, 01= acid, 10 =ice, 11= gas 
MENEDR          31       Energy (exp) drain 
MKNGDM          32       Monster belongs to kingdom 0/1 
MPLDGK          33       Players can pledge to monster 
MRSCND          34       Players can rescind to monster 
MDISEA          35       Monster causes disease 
MDISIT          36       Monster can dissolve items 
MPURIT          37       Player can purchase from monster 
MTRADE          38       Monster will give items 
MPGUAR          39       Passive exit guard 
MGAGGR          40       Monster aggro to good players 
MEAGGR          41       Monster aggro to evil players 
MDEATH          42       Monster has additon desc after death 
MBLIND          43       Monster is blind 
MSILNC          44       Monster is silenced 
MFEARS          45       Monster under Fear 

