" <-APL2-------------------- sam267.txt ---------------------------->
" <- Outer Product pp 185-186 -------------------------------------->
z # '-',[1](10 1RI10),' ',' ','|',' ',z # F(I10) J.X I 10
((1,-1YRz)R' X  |',((18R3 0),4 0)FI10),[1]z
(I4)J.+I5
10 20 J., 1 2 3
(I4)J.=I4
L # z # 3 4 J.Y 'LLLL' 'HHHHH'
Rz
`=z
s#3 4R'theywanttrain'
'at'J.=s
)off