WHILE  (condition)                    Like Perl or 'C' but not using a {} block  but an explicit end
  statement-list                                                                                    
ENDWHILE                              () parenthesis on conditions optional                         
                                                                                                    
FOR (init;condition;iterator)         Loop can be exited                                            
  statement-list                      using 'break'                                                 
ENDFOR

DO
  statement-list
UNTIL (condition)
