a # 1 60 R ' uniq                                                       '
a # a,[1]  ' a#drep a H b#drep b                                        '
a # a,[1]  ' $0                                                         '
a # a,[1]  '"uniq used in e.g. comb                                     '
a # a,[1]  '"from ''the apl handbook of techniques'' copyright 1978, ibm. '
Lfx a