This is TeX, C Version 2.93 (preloaded format=plain 89.11.27) 12 MAR 1990 09:59 **&plain try (try.tex \indexfile=\write0 \savsk=\dimen16 \savsf=\count25 \zro=\dimen17 ! Undefined control sequence. \makeindex ...pace }\wrindex \indexfile }\typeout {Writing index file \jobna... l.23 \makeindex ? ! Emergency stop. \makeindex ...pace }\wrindex \indexfile }\typeout {Writing index file \jobna... l.23 \makeindex End of file on the terminal! No pages of output.