Guide to LaTeX (4th Edition) (Tools and Techniques

3.3. Parts of the document 57
(The command \setcounter is explained in Section 8.1.) In article, num may
take on values from 0 to 5, and in book and report from −1 to 5.
It is possible to change the initial value of a sectioning command within a
document with the command
\setcounter{sec name}{num}
where sec name is the name of the sectioning command without the preceding
\ character. This procedure may be useful when individual sections are to be
processed by L AT E X as single files. For example,
\setcounter{chapter}{2}
sets the \chapter counter to 2. The counter will be incremented on the next call
to \chapter which then produces Chapter 3.
3.3.4 Appendix
An appendix is introduced with the declaration
\appendix
It has the effect of resetting the section counter for article and the
chapter counter for book and report and changing the form of the numbering
for these sectioning commands from numerals to capital letters A,
B, . . . . Furthermore, the word ‘Chapter’ is replaced by ‘Appendix’ so that
subsequent chapter headings are preceded by ‘Appendix A’, ‘Appendix B’,
etc. The numbering of lower sectioning commands contains the letter in
place of the chapter number, for example A.2.1.
3.3.5 Book structure
To simplify the structuring of a book, the commands
\frontmatter
preface, table of contents
\mainmatter
main body of text
\backmatter
bibliography, index, colophon
are provided in the book class. The \frontmatter command switches
page numbering to Roman numerals and suppresses the numbering of
chapters; \mainmatter resets the page numbering to 1 with Arabic numbers
and reactivates the chapter numbering; this is once again turned off
with \backmatter.
Exercise 3.9: Insert at the beginning of your exercise text the command
\section{Title A} and at some appropriate place near the middle \section{Title
B}. Select some suitable text for Title A and Title B. Insert at appropriate places