a # 1 60 R ' conform;j;k;r                                              '
a # a,[1]  ' r#(j#RRa)Sk#RRb                                            '
a # a,[1]  ' $0 if 0=jXk                                                '
a # a,[1]  ' a#r struct a H b#r struct b                                '
a # a,[1]  ' a#rYa H b#(r#(Ra)SRb)Yb                                    '
a # a,[1]  ' $0                                                         '
a # a,[1]  '"conform - used in e.g. fills.                              '
a # a,[1]  '"from ''the apl handbook of techniques'' copyright 1978, ibm. '
Lfx a