This is e-TeX, Version 3.14159-2.1 (INITEX)
**&etrip etrip
entering extended mode
(etrip.tex e-IniTeX: e-Trip format loaded.
This is the e-Trip test [1999/01/32] for e-TeX v3.14159-2.1.
(You are using e-TeX version/revision 2.1)
Missing character: There is no c in font nullfont!


current interactionmode (l.230): nonstop

current interactionmode (l.231): scroll

current interactionmode (l.232): errorstop

! Bad interaction mode (-1).
l.237   \interactionmode=-1 
                            \1 1 % nonstop
current interactionmode (l.237): nonstop
! Bad interaction mode (4).
l.238   \interactionmode=4 
                            \1 1 % nonstop
current interactionmode (l.238): nonstop

current interactionmode (l.239): scroll

current interactionmode (l.239): scroll

current interactionmode (l.239): nonstop

current interactionmode (l.239): nonstop

current interactionmode (l.239): errorstop

current interactionmode (l.239): errorstop

current interactionmode (l.240): errorstop

1 (l.243)
1 (l.245)
current interactionmode (l.247): errorstop

current interactionmode (l.247): scroll

current interactionmode (l.247): nonstop

