a # 1 60 R 'z # vert x                                                  '
a # a,[1]  '"vert - reshapes a vector to a n by 1 matrix.               '
a # a,[1]  '"from ''the apl handbook of techniques'' copyright 1978, ibm. '
a # a,[1]  'z # ( ( R x ) , ( 1 = R R x ) R 1 ) R x                     '
Lfx a