This is pdfTeX, Version 3.1415926-1.40.11 (TeX Live 2010) (format=pdflatex 2010.7.21) 19 OCT 2018 14:55 entering extended mode \write18 enabled. file:line:error style messages enabled. %&-line parsing enabled. **DQ2A.tex (./DQ2A.tex LaTeX2e <2009/09/24> Babel and hyphenation patterns for english, dumylang, nohyphenation, ge rman-x-2009-06-19, ngerman-x-2009-06-19, ancientgreek, ibycus, arabic, armenian , basque, bulgarian, catalan, pinyin, coptic, croatian, czech, danish, dutch, u kenglish, usenglishmax, esperanto, estonian, farsi, finnish, french, galician, german, ngerman, swissgerman, monogreek, greek, hungarian, icelandic, assamese, bengali, gujarati, hindi, kannada, malayalam, marathi, oriya, panjabi, tamil, telugu, indonesian, interlingua, irish, italian, kurmanji, lao, latin, latvian, lithuanian, mongolian, mongolianlmc, bokmal, nynorsk, polish, portuguese, roma nian, russian, sanskrit, serbian, slovak, slovenian, spanish, swedish, turkish, turkmen, ukrainian, uppersorbian, welsh, loaded. ./DQ2A.tex:1: LaTeX Error: Missing \begin{document}. See the LaTeX manual or LaTeX Companion for explanation. Type H for immediate help. ... l.1 \emph{Electric fields} are force fields produced by electric charges. ? ./DQ2A.tex:1: Emergency stop. ... l.1 \emph{Electric fields} are force fields produced by electric charges. You're in trouble here. Try typing to proceed. If that doesn't work, type X to quit. Here is how much of TeX's memory you used: 6 strings out of 493747 247 string characters out of 3143546 49070 words of memory out of 3000000 3397 multiletter control sequences out of 15000+200000 3640 words of font info for 14 fonts, out of 3000000 for 9000 714 hyphenation exceptions out of 8191 8i,0n,5p,80b,14s stack positions out of 5000i,500n,10000p,200000b,50000s ./DQ2A.tex:1: ==> Fatal error occurred, no output PDF file produced!