<para>The foreword covers introductory remarks preceding the text of a book that are written by a <emphasis>person other than the author or editor of the book. If applicable, the foreword precedes the preface which is written by the author or editor of the book.</emphasis></para>
<!-- \vspace{\baselineskip} -->
<para>Place, month year
<emphasis>Firstname Surname</emphasis></para>
<para>A preface<indexterm><primary>preface</primary></indexterm> is a book's preliminary statement, usually written by the <emphasis>author or editor of a work, which states its origin, scope, purpose, plan, and intended audience, and which sometimes includes afterthoughts and acknowledgments of assistance.</emphasis></para>
<para>When written by a person other than the author, it is called a foreword. The preface or foreword is distinct from the introduction, which deals with the subject of the work.</para>
<para>Customarily <emphasis>acknowledgments are included as last part of the preface.</emphasis></para>
<para>Optional section; if you prefer to set your acknowledgement section as a separate chapter instead of including it as last part of your preface.</para>
<para>Lists of abbreviations<indexterm><primary>acronyms, list of</primary></indexterm>, symbols<indexterm><primary>symbols, list of</primary></indexterm> and the like are easily formatted with the help of the Springer-enhanced <emphasisrole='sans'>description</emphasis> environment.</para>
<variablelist>
<varlistentry>
<term>ABC</term>
<listitem>
<para>Spelled-out abbreviation and definition</para>
</listitem>
</varlistentry>
<varlistentry>
<term>BABI</term>
<listitem>
<para>Spelled-out abbreviation and definition</para>
</listitem>
</varlistentry>
<varlistentry>
<term>CABR</term>
<listitem>
<para>Spelled-out abbreviation and definition</para>
</listitem>
</varlistentry>
</variablelist>
<section>
<PartBacktext>
Part title page and, if desired, a short introductory text (maximum one page) on its verso page
</PartBacktext>
</section>
<chapterxml:id="chap.intro">
<title>Chapter Heading</title>
</chapter>
<RunningChapter>
chapter heading in the running head
</Running Chapter>
<abstractrole='not-printed'>
<para>Each chapter should be preceded by an abstract (10–15 lines long) that summarizes the content. The abstract will appear <emphasis>online at <linkxlink:href="www.SpringerLink.com">www.SpringerLink.com</link> and be available with unrestricted access. This allows unregistered users to read the abstract as a teaser for the complete chapter. As a general rule the abstracts will not appear in the printed version of your book unless it is the style of your particular book or that of the series to which your book belongs.</emphasis><!-- \indent -->
Please use the 'starred' version of the <code>abstract</code> environment for typesetting the text of the online abstracts. Use the plain <code>abstract</code> if the abstract is also to appear in the printed version of the book.</para>
</abstract>
<abstract>
<para>Each chapter should be preceded by an abstract (10–15 lines long) that summarizes the content. The abstract will appear <emphasis>online at <linkxlink:href="www.SpringerLink.com">www.SpringerLink.com</link> and be available with unrestricted access. This allows unregistered users to read the abstract as a teaser for the complete chapter. As a general rule the abstracts will not appear in the printed version of your book unless it is the style of your particular book or that of the series to which your book belongs.</emphasis><!-- \indent -->
Please use the 'starred' version of the <code>abstract</code> environment for typesetting the text of the online abstracts. Use the plain <code>abstract</code> if the abstract is also to appear in the printed version of the book.</para>
</abstract>
<sectionxml:id="sec.Section-Heading">
<title>Section Heading</title>
</section>
<RunningSection>
section heading in the running head
</Running Section>
<para>bla</para>
<sectionxml:id="sec.Section-Heading-2">
<title>Section Heading 2</title>
<para>Instead of simply listing headings of different levels we recommend to let every heading be followed by at least a short passage of text.</para>
<para>Use the standard <emphasisrole='sans'>equation</emphasis> environment to typeset your equations, e.g.
however, for multiline equations we recommend to use the <emphasisrole='sans'>eqnarray</emphasis> environment<footnote>
<para>In physics texts please activate the class option <code>vecphys</code> to depict your vectors in <emphasisrole='bold'><emphasis>boldface-italic</emphasis> type - as is customary for a wide range of physical subjects.</emphasis></para>
</footnote>.
<informalequationxml:id="eq.01">
<altrole='tex'>a\times b & = & c\nonumber \\
<para>Instead of simply listing headings of different levels we recommend to let every heading be followed by at least a short passage of text. Furtheron please use the LyX automatism for all your cross-references<indexterm><primary>cross-references</primary></indexterm> and citations<indexterm><primary>citations</primary></indexterm> as has already been described in Sect. <xreflinkend="sec.Section-Heading-2"/>.</para>
<blockquote>
<para>Please do not use quotation marks when quoting texts! Simply use the <emphasisrole='sans'>quotation</emphasis> environment – it will automatically render Springer's preferred layout. </para>
</blockquote>
<section>
<title>Subsubsection Heading</title>
<para>Instead of simply listing headings of different levels we recommend to let every heading be followed by at least a short passage of text. Furtheron please use the LyX automatism for all your cross-references and citations as has already been described in Sect. <xreflinkend="subsec.Subsection-Heading"/>, see also Fig. <xreflinkend="fig.If-the-width"/><footnote>
<para>If you copy text passages, figures, or tables from other works, you must obtain <emphasis>permission from the copyright holder (usually the original publisher). Please enclose the signed permission with the manucript. The sources<indexterm><primary>permission to print</primary></indexterm> must be acknowledged either in the captions, as footnotes or in a separate section of the book.</emphasis></para>
</footnote></para>
<para>Please note that the first line of text that follows a heading is not indented, whereas the first lines of all subsequent paragraphs are.</para>
<formalgroupxml:id="fig.If-the-width">
<title>If the width of the figure is less than 7.8 cm use the sidecapion command to flush the caption on the left side of the page. If the figure is positioned at the top of the page, align the sidecaption with the top of the figure – to achieve this you simply need to use the optional argument [t] with the sidecaption command</title>
Error: no float found in the box. To use subfigures in DocBook, elements must be wrapped in a float inset and have a title/caption.
<sidebarrole='boxed'>
replace this box by an image
</sidebar>
</formalgroup>
<section>
<title>Paragraph Heading</title>
<para>Instead of simply listing headings of different levels we recommend to let every heading be followed by at least a short passage of text.</para>
<para>For typesetting numbered lists we recommend to use the <emphasisrole='sans'>enumerate</emphasis> environment – it will automatically render Springer's preferred layout.</para>
<orderedlist>
<listitem>
<para>Livelihood and survival mobility are oftentimes coutcomes of uneven socioeconomic development.</para>
<orderedlist>
<listitem>
<para>Livelihood and survival mobility are oftentimes coutcomes of uneven socioeconomic development.</para>
</listitem>
<listitem>
<para>Livelihood and survival mobility are oftentimes coutcomes of uneven socioeconomic development.</para>
</listitem>
</orderedlist>
</listitem>
<listitem>
<para>Livelihood and survival mobility are oftentimes coutcomes of uneven socioeconomic development.</para>
</listitem>
</orderedlist>
</section>
<section>
<title>Subparagraph Heading</title>
<para>In order to avoid simply listing headings of different levels we recommend to let every heading be followed by at least a short passage of text. Use the LyX automatism for all your cross-references and citations as has already been described in Sect. <xreflinkend="sec.Section-Heading-2"/>, see also Fig. <xreflinkend="fig.2"/>.</para>
<para>Please note that the first line of text that follows a heading is not indented, whereas the first lines of all subsequent paragraphs are.</para>
<para>For unnumbered list we recommend to use the <emphasisrole='sans'>itemize</emphasis> environment – it will automatically render Springer's preferred layout.</para>
<itemizedlist>
<listitem>
<para>Livelihood and survival mobility are oftentimes coutcomes of uneven socioeconomic development, cf. Table <xreflinkend="tab.1"/>.</para>
<itemizedlist>
<listitem>
<para>Livelihood and survival mobility are oftentimes coutcomes of uneven socioeconomic development.</para>
</listitem>
<listitem>
<para>Livelihood and survival mobility are oftentimes coutcomes of uneven socioeconomic development.</para>
</listitem>
</itemizedlist>
</listitem>
<listitem>
<para>Livelihood and survival mobility are oftentimes coutcomes of uneven socioeconomic development.</para>
</listitem>
</itemizedlist>
<formalgroupxml:id="fig.2">
<title> Please write your figure caption here</title>
Error: no float found in the box. To use subfigures in DocBook, elements must be wrapped in a float inset and have a title/caption.
<sidebarrole='boxed'>
replace this box by an image
</sidebar>
</formalgroup>
<Run-inheadings>
Run-in Heading Boldface Version
</Run-in headings>
<para>Use the LyX automatism for all your cross-references and citations as has already been described in Sect. <xreflinkend="sec.Section-Heading-2"/>.</para>
<Sub-run-inheadings>
Run-in Heading Italic Version
</Sub-run-in headings>
<para>Use the LyX automatism for all your cross-refer­ences and citations as has already been described in Sect. <xreflinkend="sec.Section-Heading-2"/><indexterm><primary>paragraph</primary></indexterm>. </para>
<tablexml:id="tab.1">
<caption>Please write your table caption here</caption>
<para>Instead of simply listing headings of different levels we recommend to let every heading be followed by at least a short passage of text.</para>
<para>Please note that the first line of text that follows a heading is not indented, whereas the first lines of all subsequent paragraphs are.</para>
<para>If you want to list definitions or the like we recommend to use the Springer-enhanced <emphasisrole='sans'>description</emphasis> environment – it will automatically render Springer's preferred layout.</para>
<variablelist>
<varlistentry>
<term>Type 1</term>
<listitem>
<para>That addresses central themes pertainng to migration, health, and disease. In Sect. <xreflinkend="sec.Section-Heading"/>, Wilson discusses the role of human migration in infectious disease distributions and patterns.</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Type 2</term>
<listitem>
<para>That addresses central themes pertainng to migration, health, and disease. In Sect. <xreflinkend="sec.Section-Heading-3"/>, Wilson discusses the role of human migration in infectious disease distributions and patterns.</para>
</listitem>
</varlistentry>
</variablelist>
<section>
<title>Subsection Heading</title>
<para>In order to avoid simply listing headings of different levels we recommend to let every heading be followed by at least a short passage of text. Use the LyX automatism for all your cross-references and citations citations as has already been described in Sect. <xreflinkend="sec.Section-Heading-2"/>.</para>
<para>Please note that the first line of text that follows a heading is not indented, whereas the first lines of all subsequent paragraphs are.</para>
<Svgraybox>
If you want to emphasize complete paragraphs of texts we recommend to use the newly defined Springer class option <emphasis>graybox</emphasis> and the newly defined environment <emphasis>svgraybox</emphasis>. This will produce a 15 percent screened box 'behind' your text.
</Svgraybox>
<Svgraybox>
If you want to emphasize complete paragraphs of texts we recommend to use the newly defined Springer class option <emphasis>graybox</emphasis> and the newly defined environment <emphasis>svgraybox</emphasis>. This will produce a 15 percent screened box 'behind' your text.
</Svgraybox>
<section>
<title>Subsubsection Heading</title>
<para>Instead of simply listing headings of different levels we recommend to let every heading be followed by at least a short passage of text.</para>
<para>Please note that the first line of text that follows a heading is not indented, whereas the first lines of all subsequent paragraphs are.</para>
<pararole='theorem'>Theorem text goes here.</para>
<pararole='definition'>Definition text goes here.</para>
<Proof>
Proof text goes here.
</Proof>
<Proof(QED)>
“qed layout” Proof text goes here.
</Proof(QED)>
<section>
<title>Paragraph Heading</title>
<para>Instead of simply listing headings of different levels we recommend to let every heading be followed by at least a short passage of text.</para>
<para>Note that the first line of text that follows a heading is not indented, whereas the first lines of all subsequent paragraphs are.</para>
<pararole='theorem'>Theorem text goes here.</para>
<pararole='definition'>Definition text goes here.</para>
<Proof(smartQED)>
“smartqed layout” Proof text goes here.
</Proof(smartQED)>
<Acknowledgement>
If you want to include acknowledgments of assistance and the like at the end of an individual chapter please use the <emphasisrole='sans'>acknowledgement</emphasis> environment – it will automatically render Springer's preferred layout.
</Acknowledgement>
<bridgeheadrenderas='sect1'>Appendix</bridgehead>
<para><!-- \addcontentsline{toc}{section}{ -->
Appendix<!-- } -->
When placed at the end of a chapter or contribution (as opposed to at the end of the book), the numbering of tables, figures, and equations in the appendix section continues on from that in the main text. Hence please <emphasis>do not use the <emphasisrole='sans'>appendix</emphasis> command when writing an appendix at the end of your chapter or contribution. If there is only one the appendix is designated “Appendix”, or “Appendix 1”, or “Appendix 2”, etc. if there is more than one.</emphasis></para>
<para>There are two styles for problems: <emphasisrole='sans'>Prob</emphasis> and <emphasisrole='sans'>Problem</emphasis>. The <emphasisrole='sans'>Prob</emphasis> style is the preferred because it can be referenced in the solution section.</para>
<para>Two examples of <emphasisrole='sans'>Prob</emphasis>:</para>
<pararole='problem'><anchorxml:id="prob.given-problem"/>A given problem or excercise is described here. The problem is described here. Its label will be referenced in its solution.</para>
<pararole='problem'><anchorxml:id="prob.prob2"/><emphasisrole='bold'>Problem Heading</emphasis> (a) The first part of the problem is described here. (b) The second part of the problem is described here.</para>
<para>This is the <emphasisrole='sans'>Problem</emphasis> style:</para>
<pararole='problem'>The problem<indexterm><primary>problems</primary></indexterm> is revealed here.</para>
<para><!-- \biblstarthook{ -->
In view of the parallel print and (chapter-wise) online publication of your book at <linkxlink:href="www.springerlink.com">www.springerlink.com</link> it has been decided that – as a genreral rule – references should be sorted chapter-wise and placed at the end of the individual chapters. However, upon agreement with your contact at Springer you may list your references in a single seperate chapter at the end of your book. Deactivate the class option <code>sectrefs</code> and the <code>thebibliography</code> environment will be put out as a chapter of its own.</para>
<para><!-- \indent -->
References may be <emphasis>cited in the text either by number (preferred) or by author/year.<footnote>
<para>Make sure that all references from the list are cited in the text. Those not cited should be moved to a separate <emphasis>Further Reading section or chapter.</emphasis></para>
</footnote> The reference list should ideally be <emphasis>sorted in alphabetical order – even if reference numbers are used for the their citation in the text. If there are several works by the same author, the following order should be used:</emphasis></emphasis></para>
<orderedlist>
<listitem>
<para>all works by the author alone, ordered chronologically by year of publication </para>
</listitem>
<listitem>
<para>all works by the author with a coauthor, ordered alphabetically by coauthor </para>
</listitem>
<listitem>
<para>all works by the author with several coauthors, ordered chronologically by year of publication. </para>
</listitem>
</orderedlist>
<para>The <emphasis>styling of references<footnote>
<para>Always use the standard abbreviation of a journal's name according to the ISSN <emphasis>List of Title Word Abbreviations, see <linkxlink:href="http://www.issn.org/en/node/344">http://www.issn.org/en/node/344</link></emphasis></para>
</footnote> depends on the subject of your book:</emphasis></para>
<itemizedlist>
<listitem>
<para>The <emphasis>two recommended styles for references in books on <emphasis>mathematical, physical, statistical and computer sciences are depicted in  <bibliorefendterm="science-contrib"/>, <bibliorefendterm="x-science-online"/>, <bibliorefendterm="x-science-mono"/>, <bibliorefendterm="x-science-journal"/>, <bibliorefendterm="x-science-DOI"/> and  <bibliorefendterm="phys-online"/>, <bibliorefendterm="x-phys-mono"/>, <bibliorefendterm="x-phys-journal"/>, <bibliorefendterm="x-phys-DOI"/>, <bibliorefendterm="x-phys-contrib"/>.</emphasis></emphasis></para>
</listitem>
<listitem>
<para>Examples of the most commonly used reference style in books on <emphasis>Psychology, Social Sciences are <bibliorefendterm="psysoc-mono"/>, <bibliorefendterm="x-psysoc-online"/>, <bibliorefendterm="psysoc-journal"/>, <bibliorefendterm="x-psysoc-contrib"/>, <bibliorefendterm="x-psysoc-DOI"/>.</emphasis></para>
</listitem>
<listitem>
<para>Examples for references in books on <emphasis>Humanities, Linguistics, Philosophy are <bibliorefendterm="humlinphil-journal"/>, <bibliorefendterm="x-humlinphil-contrib"/>, <bibliorefendterm="x-humlinphil-mono"/>, <bibliorefendterm="x-humlinphil-online"/>, <bibliorefendterm="x-humlinphil-DOI"/>.</emphasis></para>
</listitem>
<listitem>
<para>Examples of the basic Springer style used in publications on a wide range of subjects such as <emphasis>Computer Science, Economics, Engineering, Geosciences, Life Sciences, Medicine, Biomedicine are  <bibliorefendterm="basic-contrib"/>, <bibliorefendterm="x-basic-online"/>, <bibliorefendterm="x-basic-journal"/>, <bibliorefendterm="x-basic-DOI"/>, <bibliorefendterm="x-basic-mono"/>.</emphasis></para>
</listitem>
</itemizedlist>
<para><!-- } -->
</para>
</section>
</section>
</section>
</section>
<bibliography>
<bibliomixedxml:id='science-contrib-1'> Broy, M.: Software engineering — from auxiliary to key technologies. In: Broy, M., Dener, E. (eds.) Software Pioneers, pp. 10-13. Springer, Heidelberg (2002)</bibliomixed>
<bibliomixedxml:id='science-online-1'> Dod, J.: Effective substances. In: The Dictionary of Substances and Their Effects. Royal Society of Chemistry (1999) Available via DIALOG. <linkxlink:href="http://www.rsc.org/dose/title of subordinate document. Cited 15 Jan 1999">http://www.rsc.org/dose/title of subordinate document. Cited 15 Jan 1999</link></bibliomixed>
<bibliomixedxml:id='science-mono-1'> Geddes, K.O., Czapor, S.R., Labahn, G.: Algorithms for Computer Algebra. Kluwer, Boston (1992)</bibliomixed>
<bibliomixedxml:id='science-journal-1'> Hamburger, C.: Quasimonotonicity, regularity and duality for nonlinear systems of partial differential equations. Ann. Mat. Pura. Appl. <emphasisrole='bold'>169</emphasis>, 321–354 (1995)</bibliomixed>
<bibliomixedxml:id='science-DOI-1'> Slifka, M.K., Whitton, J.L.: Clinical implications of dysregulated cytokine production. J. Mol. Med. (2000) doi: 10.1007/s001090000086
</bibliomixed>
</bibliography>
<bibliography>
<bibliomixedxml:id='phys-online-1'> J. Dod, in <emphasis>The Dictionary of Substances and Their Effects, Royal Society of Chemistry. (Available via DIALOG, 1999), <linkxlink:href="http://www.rsc.org/dose/title of subordinate document. Cited 15 Jan 1999">http://www.rsc.org/dose/title of subordinate document. Cited 15 Jan 1999</link></emphasis></bibliomixed>
<bibliomixedxml:id='phys-mono-1'> H. Ibach, H. Lüth, <emphasis>Solid-State Physics, 2nd edn. (Springer, New York, 1996), pp. 45-56</emphasis></bibliomixed>
<bibliomixedxml:id='phys-journal-1'> S. Preuss, A. Demchuk Jr., M. Stuke, Appl. Phys. A <emphasisrole='bold'>61</emphasis></bibliomixed>
<bibliomixedxml:id='phys-DOI-1'> M.K. Slifka, J.L. Whitton, J. Mol. Med., doi: 10.1007/s001090000086</bibliomixed>
<bibliomixedxml:id='phys-contrib-1'> S.E. Smith, in <emphasis>Neuromuscular Junction, ed. by E. Zaimis. Handbook of Experimental Pharmacology, vol 42 (Springer, Heidelberg, 1976), p. 593
</emphasis></bibliomixed>
<bibliomixedxml:id='psysoc-mono-1'> Calfee, R. C., & Valencia, R. R. (1991). <emphasis>APA guide to preparing manuscripts for journal publication. Washington, DC: American Psychological Association.</emphasis></bibliomixed>
<bibliomixedxml:id='psysoc-online-1'> Dod, J. (1999). Effective substances. In: The dictionary of substances and their effects. Royal Society of Chemistry. Available via DIALOG. <linkxlink:href="http://www.rsc.org/dose/Effective substances.">http://www.rsc.org/dose/Effective substances.</link> Cited 15 Jan 1999.</bibliomixed>
<bibliomixedxml:id='psysoc-journal-1'> Harris, M., Karper, E., Stacks, G., Hoffman, D., DeNiro, R., Cruz, P., et al. (2001). Writing labs and the Hollywood connection. <emphasis>J Film Writing, 44(3), 213–245.</emphasis></bibliomixed>
<bibliomixedxml:id='psysoc-contrib-1'> O'Neil, J. M., & Egan, J. (1992). Men's and women's gender role journeys: Metaphor for healing, transition, and transformation. In B. R. Wainrig (Ed.), <emphasis>Gender issues across the life cycle (pp. 107–123). New York: Springer.</emphasis></bibliomixed>
<bibliomixedxml:id='psysoc-DOI-1'>Kreger, M., Brindis, C.D., Manuel, D.M., Sassoubre, L. (2007). Lessons learned in systems change initiatives: benchmarks and indicators. <emphasis>American Journal of Community Psychology, doi: 10.1007/s10464-007-9108-14.
</emphasis></bibliomixed>
<bibliomixedxml:id='humlinphil-journal-1'> Alber John, Daniel C. O'Connell, and Sabine Kowal. 2002. Personal perspective in TV interviews. <emphasis>Pragmatics 12:257–271</emphasis></bibliomixed>
<bibliomixedxml:id='humlinphil-contrib-1'> Cameron, Deborah. 1997. Theoretical debates in feminist linguistics: Questions of sex and gender. In <emphasis>Gender and discourse, ed. Ruth Wodak, 99–119. London: Sage Publications.</emphasis></bibliomixed>
<bibliomixedxml:id='humlinphil-mono-1'> Cameron, Deborah. 1985. <emphasis>Feminism and linguistic theory. New York: St. Martin's Press.</emphasis></bibliomixed>
<bibliomixedxml:id='humlinphil-online-1'> Dod, Jake. 1999. Effective substances. In: The dictionary of substances and their effects. Royal Society of Chemistry. Available via DIALOG. http://www.rsc.org/dose/title of subordinate document. Cited 15 Jan 1999</bibliomixed>
<bibliomixedxml:id='humlinphil-DOI-1'> Suleiman, Camelia, Daniel C. O'Connell, and Sabine Kowal. 2002. `If you and I, if we, in this later day, lose that sacred fire...´': Perspective in political interviews. <emphasis>Journal of Psycholinguistic Research. doi: 10.1023/A:1015592129296.
</emphasis></bibliomixed>
<bibliomixedxml:id='basic-contrib-1'> Brown B, Aaron M (2001) The politics of nature. In: Smith J (ed) The rise of modern genomics, 3rd edn. Wiley, New York</bibliomixed>
<bibliomixedxml:id='basic-online-1'> Dod J (1999) Effective Substances. In: The dictionary of substances and their effects. Royal Society of Chemistry. Available via DIALOG. <linkxlink:href="http://www.rsc.org/dose/title of subordinate document. Cited 15 Jan 1999">http://www.rsc.org/dose/title of subordinate document. Cited 15 Jan 1999</link></bibliomixed>
<para>Here comes the glossary<indexterm><primary>glossary</primary></indexterm></para>
<Run-inheadings>
glossary term
</Run-in headings>
<para>Write here the description of the glossary term. Write here the description of the glossary term. Write here the description of the glossary term.</para>
<Run-inheadings>
glossary term
</Run-in headings>
<para>Write here the description of the glossary term. Write here the description of the glossary term. Write here the description of the glossary term.</para>
<Run-inheadings>
glossary term
</Run-in headings>
<para>Write here the description of the glossary term. Write here the description of the glossary term. Write here the description of the glossary term.</para>
<Run-inheadings>
glossary term
</Run-in headings>
<para>Write here the description of the glossary term. Write here the description of the glossary term. Write here the description of the glossary term.</para>
<Run-inheadings>
glossary term
</Run-in headings>
<para>Write here the description of the glossary term. Write here the description of the glossary term. Write here the description of the glossary term.</para>
<para>Solutions</para>
<bridgeheadrenderas='sect1'>Problems of Chapter <xreflinkend="chap.intro"/></bridgehead>
<para>There two styles for solutions: <emphasisrole='sans'>Sol</emphasis> and <emphasisrole='sans'>Solution</emphasis>. The <emphasisrole='sans'>Sol</emphasis> style is the preferred because it references trhe corresponding <emphasisrole='sans'>Prob</emphasis> problem style.</para>
<para>An examples of <emphasisrole='sans'>Sol</emphasis>:</para>
<pararole='solution'>The solution of the corresponding problem. The number of the prob/sol can also be referenced in the text: “As explained in the description of problem <xreflinkend="prob.given-problem"/>…”</para>
<pararole='solution'><emphasisrole='bold'>Problem Heading</emphasis>(a) The solution of first part is revealed here.(b) The solution of second part is revealed here.</para>
<para>An example of <emphasisrole='sans'>Solution</emphasis>:</para>
<pararole='solution'>The solution<indexterm><primary>solutions</primary></indexterm> is revealed here.</para>
