This is TeX, Version 0.6 (INITEX)  2 NOV 1982 05:17
**trip
(TRIP.TEX
> \rip .
l.30   \showthe\font
                    

! Illegal unit of measure (replaced by filll).
l.35 ...ip200 = 10pt plus5fillll
                                minus 0 fill
I dddon't go any higher than filll.

Beginning to dump on file TRIP.FMT (format=trip 82.11.2)
1113 strings of total length 22670
404 memory locations dumped; current usage is 81&226
264 multiletter control sequences
\font\rip=trip
\font\smalltrip=trip at 5.0pt
\font\bigtrip=trip at 20.0pt
540 words of font info for 3 preloaded fonts
1 hyphenation exception
Hyphenation trie of length 137 has 5 ops
No output file.