1500.5—Rules of construction.
               		
               		
               	 	
               	 	
               	 	
               	 		
    
        
        (a) 
         In this chapter, unless the context requires otherwise:
     
    
        
        (1) 
         Words importing the singular include the plural.
     
    
        
        (2) 
         Words importing the plural include the singular.
     
    
        
        (3) 
         Words importing the masculine gender include the feminine.
     
    
        
        (b) 
         In this chapter, the word:
     
    
        
        (1) 
         “Must” is used in an imperative sense;
     
    
        
        (2) 
         “May” is used in a permissive sense to state authority or permission to do the act prescribed, and the words “no person may * * *” or “a person may not * * *” mean that no person is required, authorized, or permitted to do the act prescribed; and
     
    
        
        (3) 
         “Includes” means “includes but is not limited to”.