[Example] 
   

 
 IFDEF ~ ENDIF 
 
  Format  IFDEF 
  ENDIF 

 Description  If  is already defined, assemble to ELSE or ENDIF. 

 [Example] 
   

 
 IFNDEF ~ ENDIF 
  Format  IFNDEF 
  ENDIF 

 Description  If  is not defined, assemble to ELSE or ENDIF.
:  Has the opposite function to IFDEF-ENDIF. 

 [Example] 
   

 
 IFB ~ ENDIF 
  format  IFB  

 Description  'If there is no character between' <'and'> ', it will assemble to ELSE or ENDIF.
.  The character string must be enclosed in “<” and “>”.