B=4W    #MAC  JNREALT   
 B=JG          JFLAGW   %A,MRTREQ              [RT REQ IF FLAG WAVER 
 B?46          LTYPE    %A,0 
 B?HQ          SBN   0  23   
 B#3B          BZE   0  MRTREQ              [OR IF UDT   
 B#H2    [                                   OR NON ENG EXOTIC...
 B*2L          CHECKXOT %A,%B               [SO J IF NOT EXOTIC...   
 B*G=          JENGABLE %A,%B               [OR IF ENGAGEABLE
 B*^W    MRTREQ  
 BBFG    #NOR