a # 1 60 R ' z#b in m                                                   '
a # a,[1]  ' ''zero is invalid argument''hang 0=1Ym                       '
a # a,[1]  ' z#(1 1,Rz)Rz#b,m                                           '
a # a,[1]  ' $0                                                         '
a # a,[1]  '"in - see Gto.                                              '
a # a,[1]  '"from ''the apl handbook of techniques'' copyright 1978, ibm. '
Lfx a