This is TeX, WAITS Version 2.1 (preloaded format=plain 87.2.17) 28 APR 1987 22:47
**\err
! TeX capacity exceeded, sorry [text input levels=6].
<insert> \err↑↑?
\err
<insert> \err
\err
<insert> \err
\err
<insert> \err
\err
<insert> \err
\err
<insert> \err
\err
<*> \err
If you really absolutely need more capacity,
you can ask a wizard to enlarge me.
No pages of output.