This is TeX, WAITS Version 2.1 (preloaded format=plain 87.2.17)  13 JUN 1987 21:26
**A.TEX
(A.TEX[TEX,DEK]
{vertical mode: \immediate}
! Missing number, treated as zero.
<to be read again> 
                   !
l.1 \batchmode\tracingcommands2\immediate\write!
                                                \stop
A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

! Missing { inserted.
<to be read again> 
                   !
l.1 \batchmode\tracingcommands2\immediate\write!
                                                \stop
A left brace was mandatory here, so I've put one in.
You might want to delete and/or insert some corrections
so that I will find a matching right brace soon.
(If you're confused by all this, try typing `I}' now.)

)
Runaway text?
!\stop 
! File ended while scanning text of \write.
<inserted text> 
                }
<*> A.TEX
         
I suspect you have forgotten a `}', causing me
to read past where you wanted me to stop.
I'll try to recover; but if the error is serious,
you'd better type `E' or `X' now and fix your file.

{no mode: undefined}
! Undefined control sequence.
<write> !\stop 
               
<inserted text> 
                }\endwrite 
<inserted text> }
                 
<*> A.TEX
         
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

!
! Emergency stop.
<*> A.TEX
         
*** (job aborted, no legal \end found)

No pages of output.