This is pdfeTeX, Version 3.141592-1.21a-2.2 (Web2C 7.5.4) (format=latex 2007.11.2) 25 JUL 2009 10:53 entering extended mode **\makeatletter\def\HCode{\futurelet\HCode\HChar}\def\HChar{\ifx"\HCode\def\HCo de"##1"{\Link##1}\expandafter\HCode\else\expandafter\Link\fi}\def\Link#1.a.b.c. {\g@addto@macro\@documentclasshook{\RequirePackage[#1,html]{tex4ht}}\let\HCode\ documentstyle\def\documentstyle{\let\documentstyle\HCode\expandafter\def\csname tex4ht\endcsname{#1,html}\def\HCode####1{\documentstyle[tex4ht,}\@ifnextchar[{ \HCode}{\documentstyle[tex4ht]}}}\makeatother\HCode html,2,info.a.b.c.\input c hapter1.tex (./chapter1.tex ! Undefined control sequence. l.1 \chapter {Introduction} ? x Here is how much of TeX's memory you used: 8 strings out of 94501 140 string characters out of 1173692 48348 words of memory out of 1000000 3276 multiletter control sequences out of 10000+50000 3640 words of font info for 14 fonts, out of 500000 for 2000 580 hyphenation exceptions out of 1000 4i,0n,3p,510b,8s stack positions out of 1500i,500n,5000p,200000b,5000s No pages of output.