" <-APL2-------------------- sam239.txt ---------------------------->
" <- direction (x), page 93 ---------------------------------------->
X-5
X-4 0 4
X3j4
X0j1 0j-1
" <- disclose (`X), page 94 ---------------------------------------->
`X(2 3 4) (5 6)
L#r#2 3R(I4)'abcd' '****'(5 6 7 8)'efgh' 'HHHH'
Rr
`=r
L#z#`Xr
Rz
`=z
L#e#(2 4RI8) 9 (3 2R'abcdef')
L#n#`Xe
Rn
`=n
L#v#`Xd#'wheel' 'of' 'fortune'
Rv
`=v
)off