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-rw-r--r--nixos/doc/manual/development/writing-documentation.xml74
1 files changed, 56 insertions, 18 deletions
diff --git a/nixos/doc/manual/development/writing-documentation.xml b/nixos/doc/manual/development/writing-documentation.xml
index ffefa208f66c..2183937ad0da 100644
--- a/nixos/doc/manual/development/writing-documentation.xml
+++ b/nixos/doc/manual/development/writing-documentation.xml
@@ -5,13 +5,18 @@
         xml:id="sec-writing-documentation">
  <title>Writing NixOS Documentation</title>
  <para>
-  As NixOS grows, so too does the need for a catalogue and explanation of its extensive functionality. Collecting pertinent information from disparate sources and presenting it in an accessible style would be a worthy contribution to the project.
+  As NixOS grows, so too does the need for a catalogue and explanation of its
+  extensive functionality. Collecting pertinent information from disparate
+  sources and presenting it in an accessible style would be a worthy
+  contribution to the project.
  </para>
  <section xml:id="sec-writing-docs-building-the-manual">
   <title>Building the Manual</title>
 
   <para>
-   The DocBook sources of the <xref linkend="book-nixos-manual"/> are in the <link xlink:href="https://github.com/NixOS/nixpkgs/tree/master/nixos/doc/manual"><filename>nixos/doc/manual</filename></link> subdirectory of the Nixpkgs repository.
+   The DocBook sources of the <xref linkend="book-nixos-manual"/> are in the
+   <link xlink:href="https://github.com/NixOS/nixpkgs/tree/master/nixos/doc/manual"><filename>nixos/doc/manual</filename></link>
+   subdirectory of the Nixpkgs repository.
   </para>
 
   <para>
@@ -24,45 +29,59 @@
 </screen>
 
   <para>
-   Once you are done making modifications to the manual, it's important to build it before committing. You can do that as follows:
+   Once you are done making modifications to the manual, it's important to
+   build it before committing. You can do that as follows:
   </para>
 
 <screen>nix-build nixos/release.nix -A manual.x86_64-linux</screen>
 
   <para>
-   When this command successfully finishes, it will tell you where the manual got generated. The HTML will be accessible through the <filename>result</filename> symlink at <filename>./result/share/doc/nixos/index.html</filename>.
+   When this command successfully finishes, it will tell you where the manual
+   got generated. The HTML will be accessible through the
+   <filename>result</filename> symlink at
+   <filename>./result/share/doc/nixos/index.html</filename>.
   </para>
  </section>
  <section xml:id="sec-writing-docs-editing-docbook-xml">
   <title>Editing DocBook XML</title>
 
   <para>
-   For general information on how to write in DocBook, see <link xlink:href="http://www.docbook.org/tdg5/en/html/docbook.html"> DocBook 5: The Definitive Guide</link>.
+   For general information on how to write in DocBook, see
+   <link xlink:href="http://www.docbook.org/tdg5/en/html/docbook.html"> DocBook
+   5: The Definitive Guide</link>.
   </para>
 
   <para>
-   Emacs nXML Mode is very helpful for editing DocBook XML because it validates the document as you write, and precisely locates errors. To use it, see <xref linkend="sec-emacs-docbook-xml"/>.
+   Emacs nXML Mode is very helpful for editing DocBook XML because it validates
+   the document as you write, and precisely locates errors. To use it, see
+   <xref linkend="sec-emacs-docbook-xml"/>.
   </para>
 
   <para>
-   <link xlink:href="http://pandoc.org">Pandoc</link> can generate DocBook XML from a multitude of formats, which makes a good starting point.
+   <link xlink:href="http://pandoc.org">Pandoc</link> can generate DocBook XML
+   from a multitude of formats, which makes a good starting point.
    <example xml:id="ex-pandoc-xml-conv">
     <title>Pandoc invocation to convert GitHub-Flavoured MarkDown to DocBook 5 XML</title>
 <screen>pandoc -f markdown_github -t docbook5 docs.md -o my-section.md</screen>
    </example>
-   Pandoc can also quickly convert a single <filename>section.xml</filename> to HTML, which is helpful when drafting.
+   Pandoc can also quickly convert a single <filename>section.xml</filename> to
+   HTML, which is helpful when drafting.
   </para>
 
   <para>
-   Sometimes writing valid DocBook is simply too difficult. In this case, submit your documentation updates in a <link
-  xlink:href="https://github.com/NixOS/nixpkgs/issues/new">GitHub Issue</link> and someone will handle the conversion to XML for you.
+   Sometimes writing valid DocBook is simply too difficult. In this case,
+   submit your documentation updates in a
+   <link
+  xlink:href="https://github.com/NixOS/nixpkgs/issues/new">GitHub
+   Issue</link> and someone will handle the conversion to XML for you.
   </para>
  </section>
  <section xml:id="sec-writing-docs-creating-a-topic">
   <title>Creating a Topic</title>
 
   <para>
-   You can use an existing topic as a basis for the new topic or create a topic from scratch.
+   You can use an existing topic as a basis for the new topic or create a topic
+   from scratch.
   </para>
 
   <para>
@@ -70,27 +89,40 @@
    <itemizedlist>
     <listitem>
      <para>
-      The NixOS <link xlink:href="http://www.docbook.org/tdg5/en/html/book.html"><tag>book</tag></link> element is in <filename>nixos/doc/manual/manual.xml</filename>. It includes several <link xlink:href="http://www.docbook.org/tdg5/en/html/book.html"><tag>part</tag>s</link> which are in subdirectories.
+      The NixOS
+      <link xlink:href="http://www.docbook.org/tdg5/en/html/book.html"><tag>book</tag></link>
+      element is in <filename>nixos/doc/manual/manual.xml</filename>. It
+      includes several
+      <link xlink:href="http://www.docbook.org/tdg5/en/html/book.html"><tag>part</tag>s</link>
+      which are in subdirectories.
      </para>
     </listitem>
     <listitem>
      <para>
-      Store the topic file in the same directory as the <tag>part</tag> to which it belongs. If your topic is about configuring a NixOS module, then the XML file can be stored alongside the module definition <filename>nix</filename> file.
+      Store the topic file in the same directory as the <tag>part</tag> to
+      which it belongs. If your topic is about configuring a NixOS module, then
+      the XML file can be stored alongside the module definition
+      <filename>nix</filename> file.
      </para>
     </listitem>
     <listitem>
      <para>
-      If you include multiple words in the file name, separate the words with a dash. For example: <filename>ipv6-config.xml</filename>.
+      If you include multiple words in the file name, separate the words with a
+      dash. For example: <filename>ipv6-config.xml</filename>.
      </para>
     </listitem>
     <listitem>
      <para>
-      Make sure that the <tag>xml:id</tag> value is unique. You can use abbreviations if the ID is too long. For example: <varname>nixos-config</varname>.
+      Make sure that the <tag>xml:id</tag> value is unique. You can use
+      abbreviations if the ID is too long. For example:
+      <varname>nixos-config</varname>.
      </para>
     </listitem>
     <listitem>
      <para>
-      Determine whether your topic is a chapter or a section. If you are unsure, open an existing topic file and check whether the main element is chapter or section.
+      Determine whether your topic is a chapter or a section. If you are
+      unsure, open an existing topic file and check whether the main element is
+      chapter or section.
      </para>
     </listitem>
    </itemizedlist>
@@ -100,11 +132,17 @@
   <title>Adding a Topic to the Book</title>
 
   <para>
-   Open the parent XML file and add an <varname>xi:include</varname> element to the list of chapters with the file name of the topic that you created. If you created a <tag>section</tag>, you add the file to the <tag>chapter</tag> file. If you created a <tag>chapter</tag>, you add the file to the <tag>part</tag> file.
+   Open the parent XML file and add an <varname>xi:include</varname> element to
+   the list of chapters with the file name of the topic that you created. If
+   you created a <tag>section</tag>, you add the file to the <tag>chapter</tag>
+   file. If you created a <tag>chapter</tag>, you add the file to the
+   <tag>part</tag> file.
   </para>
 
   <para>
-   If the topic is about configuring a NixOS module, it can be automatically included in the manual by using the <varname>meta.doc</varname> attribute. See <xref
+   If the topic is about configuring a NixOS module, it can be automatically
+   included in the manual by using the <varname>meta.doc</varname> attribute.
+   See <xref
   linkend="sec-meta-attributes"/> for an explanation.
   </para>
  </section>