nl_tokens: Executes the body if the condition is true
pl_tokens: function IfCommand ( args , define ) { if ( util . endsWith ( args . toLowerCase ( ) , ' then' ) ) args = args . slice ( 0 , args . length - 5 ) . trim ( ) ; else throw new SyntaxError ( 'IF has no THEN' ) ; var parsed = new statements . ArgumentStatement ( args , { separator : false } , define ) ; this . condition = parsed . args [ 0 ] ; this . <mask> = define ( { start : 'IF' , then : 'ELSE' , end : [ 'ENDIF' , 'RETURN' ] } ) ; }