restricted system commands enabled.
**writes.tex
(./writes.tex
\openout20 = wtest20.tex
neg-one
sixteen
seventeen
twohundred
> \box0=
\hbox(0.0+0.0)x0.0, direction TLT
.\write-{a}
.\write5{b}
.\write*{c}
.\write-{d}
.\write-{e}
! OK.
l.10 ...rite16{c}\write40{d}\write200{e}}\showbox0
)
No pages of output.