For purposes of this subpart:
    
    
        
        (a) 
         Any term in the singular includes the plural, and the plural includes the singular, if such use would be appropriate;
     
    
        
        (b) 
         Any use of a masculine, feminine, or neuter gender encompasses all three, if such use would be appropriate;
     
    
        
        (c) 
         The term counsel includes a non-attorney representative; and
     
    
        
        (d) 
         Unless the context requires otherwise, a party's counsel of record, if any, may, on behalf of that party, take any action required to be taken by the party.