a # 1 61 R ' r#dlb k                                                     '
a # a,[1]  '"dlb - used in output function.                              '
a # a,[1]  '"from ''the apl handbook of techniques'' copyright 1978, ibm.  '
a # a,[1]  ' r#(_(-1URk),S/,+/V\'' ''^=k)Yk                                '
Lfx a