Index: x/installing/tuning-fontconfig.xml
===================================================================
--- x/installing/tuning-fontconfig.xml	(revision 9c1319c6026a0bf35d72625b7d51a85102984d6d)
+++ x/installing/tuning-fontconfig.xml	(revision 0262f7c8d8af2b60bcd46cff56f1054658ab41c4)
@@ -131,8 +131,8 @@
       class="directory">TTF</filename> <application>X</application> font
       directories to <filename
-      class="directory">/usr/share/fonts/X11-{OTF,TTF}</filename>. This allows
-      <application>Fontconfig</application> to use the OpenType and TrueType
-      fonts provided by <application>X</application>, although many people will
-      prefer to use more modern fonts.
+      class="directory">/usr/share/fonts/X11-{OTF,TTF}</filename> in Xorg Fonts.
+      This allows <application>Fontconfig</application> to use the OpenType and
+      TrueType fonts provided by <application>X</application>, although many
+      people will prefer to use more modern fonts.
     </para>
 
@@ -159,7 +159,7 @@
     <para>
       <command>fc-list | less</command> : shows a list of all available fonts
-      (/path/to/filename: Font Name:style). If you installed a font more than
-      30 seconds ago but it does not show, then it or one of its directories is
-      not readable by your user.
+      (/path/to/filename: Font Name:style). If you installed a font and it
+      doesn't show, then the directory it is contained in is not readable by
+      your user.
     </para>
 
@@ -176,5 +176,5 @@
       <command>fc-match -a <replaceable>Type</replaceable> | less</command> :
       provides a list of all fonts which can be used for that type (Monospace,
-      Sans Sans-serif, Serif <emphasis>(capital letters optional)</emphasis>).
+      Sans, Sans-serif, Serif <emphasis>(capital letters optional)</emphasis>).
       Note that in-extremis <application>Fontconfig</application> will take a
       glyph from any available font, even if it is not of the specified type,
@@ -187,7 +187,7 @@
       It does not mean that the reported font will necessarily be able to show
       Japanese ideograms, so a fallback might be used, or some glyphs may be
-      missing. For language codes use  ISO-639 value such as 'fr', 'ja', 'zh-cn'.
+      missing. For language codesi, use ISO-639 values such as 'fr', 'ja', 'zh-cn'.
       Note that an unrecognized value such as just 'zh' will not return any
-      match. To illustrate the fallback, on a system wherei both Noto Sans Mono
+      match. To illustrate the fallback, on a system where both Noto Sans Mono
       and DejaVu Sans Mono are installed, <command>fc-match 'monospace
       :lang=en</command> shows Noto Sans Mono will be used, but if the lang is
@@ -320,5 +320,5 @@
       examples of Latin fonts with the same metrics can be found in the
       'Substitutes' PDFs at <ulink
-      url="http://zarniwhoop.uk/files/PDF-substitutes/">zarniwhoop.uk.)</ulink>
+      url="http://zarniwhoop.uk/files/PDF-substitutes/">zarniwhoop.uk.</ulink>
     </para>
 
@@ -344,5 +344,5 @@
 
     <para>
-      Default Persion fonts are dealt with in
+      Default Persian fonts are dealt with in
       <filename>65-fonts-persian.conf</filename>. It looks as if all the listed
       fonts are commercial. Using fonts that support Persian (which has its own
@@ -386,5 +386,5 @@
       The various Noto CJK fonts are <emphasis>not</emphasis> among the listed
       fonts, possibly the RedHat developers preferred other fonts.  These now
-      come in many variations, probably anyone who uses these will not install
+      come in many variations, and most users  who use these will not install
       any other CJK fonts.
     </para>
@@ -402,7 +402,7 @@
       For serif, Times New Roman could have been aliased from Liberation Serif or
       Tinos, and Times from TeX Gyre Termes, so although the named fonts are not
-      free, the metric-compatilbe fonts can be used. Ignoring other non-free fonts,
+      free, the metric-compatible fonts can be used. Ignoring other non-free fonts,
       the remaining order for serif is: Times New Roman, Luxi Serif, Nimbus Roman
-      No9 L, Times. In practice, that means those fonts at the end of the list
+      No9 L, and Times. In practice, that means those fonts at the end of the list
       are unlikely to be used unless a web page asks for them.
     </para>
@@ -410,10 +410,10 @@
     <para>
       For sans-serif, the remaining order is anything mapped to Arial, Luxi Sans,
-      Nimbus Sans L, anything mapped to Helvetica.
+      Nimbus Sans L, and anything mapped to Helvetica.
     </para>
 
     <para>
       The remaining alternatives for monospace are Inconsolata, anything mapped
-      to Courier New, Luxi Mono, Nimbus Mono, anything mapped to Courier.
+      to Courier New, Luxi Mono, Nimbus Mono, and anything mapped to Courier.
     </para>
 
@@ -468,6 +468,6 @@
       run <command>startx</command> again so that all applications use the new
       settings. Several things can override the fontconfig settings, see
-      <xref linkend="items-which-can-override-fontconfig"/> below. To explore
-      the possibilities, create a file for your user:
+      <xref linkend="items-which-can-override-fontconfig"/> below for more
+      details. To explore the possibilities, create a file for your user:
     </para>
 
@@ -534,5 +534,5 @@
         linkend="subpixel-hinting"/> (Spoiler: there is NO sub-pixel hinting,
         the code simply ignores <emphasis>all</emphasis> horizontal hinting
-        instructions.
+        instructions).
       </para>
 
@@ -597,10 +597,11 @@
     synthetic slanting and emboldening to a font. The synthetic emboldening can
     be applied to a visibly faint font, but the results are not always as
-    expected: With just the embolden, <application>epiphany</application> showed
-    darker font, <application>firefox</application> did not - so although
-    <application>cairo</application> is now used by
+    expected: With just the embolden, <application>Epiphany</application> showed
+    darker fonts while <application>Firefox</application> did not - so although
+    <application>Cairo</application> is now used by
     <application>firefox</application> the comment about setting Weight is still
-    valid. But setting both, <application>epiphany</application> will show bold text
-    by default, but heavy text if markup for bold is used. In both cases, neither
+    valid. But setting both, <application>Epiphany</application> will show bold
+    text by default, but it will show heavy text if markup for bold is used. In both
+    cases, neither
     <application>libreOffice</application> nor <application>falkon</application>
     showed bolder text.
@@ -902,6 +903,5 @@
     </para>
 
-    <para>
-      <literallayout>
+<screen role="root">
    &lt;match target="pattern"&gt;
        &lt;test qual="any" name="lang" compare="contains"&gt;
@@ -915,6 +915,6 @@
            &lt;string&gt;AR PL UMing CN&lt;/string&gt;
        &lt;/edit&gt;
-    &lt;/match&gt;</literallayout>
-    </para>
+   &lt;/match&gt;
+</screen>
 
     <para>
@@ -930,6 +930,5 @@
     </para>
 
-    <para>
-      <literallayout>
+<screen role="root">
    &lt;match target="pattern"&gt;
        &lt;test qual="any" name="lang" compare="contains"&gt;
@@ -953,6 +952,6 @@
            &lt;string&gt;AR PL UMing CN&lt;/string&gt;
        &lt;/edit&gt;
-    &lt;/match&gt;</literallayout>
-    </para>
+    &lt;/match&gt;
+</screen>
 
   </sect2>
@@ -1046,5 +1045,6 @@
       <application>Fontconfig</application> specify e.g. 'Sans 12', Serif 11',
       'Mono 10' as desired. Also review the antialiasing, hinting and rgba
-      settings.
+      settings. Alternatively, <xref linkend="gnome-tweaks"/> can also update
+      the font settings in a GUI form.
     </para>
 
@@ -1064,6 +1064,6 @@
 
     <para>
-      i<application>Xfce desktop</application>: The settings can be adjusted in
-      <application>Settings</application> Appearance -> Fonts. Specify your
+      <application>Xfce desktop</application>: The settings can be adjusted in
+      <application>Settings</application>i -> Appearance -> Fonts. Specify your
       preferred fonts, e.g. 'Sans Regular' (to use the normal face and weight
       rather than Bold and/or Italic) and adjust the point size in the option.
@@ -1103,4 +1103,10 @@
     </para>
 
+    <para>
+      <application>Thunderbird</application>: The font settings can be changed
+      by going to "Edit -> Settings" and then scrolling down to "Fonts &amp;
+      Colors".
+    </para>
+
   </sect2>
 
