Sync docs: Text/Labels/ENVVARS -> EXTENDING re: fonts

docs/is_IS.UTF-8/ENVVARS.txt

@@ -125,3 +125,7 @@ may be used by the "Text" and "Label" tools.
     the location of the user's configuration files. It is used to find a
     user-specific "fonts.conf" configuration file.
      
+
+⚙ See the "Extending Tux Paint" documentation for information on where Tux
+Paint searches for fonts.
+

docs/is_IS.UTF-8/EXTENDING.txt

@@ -620,7 +620,7 @@ option is set). The locations vary, depending on operating system.
       + B_USER_FONTS_DIRECTORY
       + B_USER_NONPACKAGED_FONTS_DIRECTORY
 
-  * Linux
+  * Linux/etc.
       + /usr/share/feh/fonts
       + /usr/share/fonts
       + /usr/X11R6/lib/X11/fonts
@@ -633,7 +633,46 @@ option is set). The locations vary, depending on operating system.
 
                               ### FontConfig ###
 
-...
+Tux Paint utilizes FontConfig to find additional system-wide and user-specific
+fonts that the 'Text' and 'Label' tools might be able to use (unless the
+"--nosysfonts" option is set). It does this by looking for FontConfig
+configuration files ("fonts.conf") in various locations.
+
+  * Windows
+      + The "etc/fonts/fonts.conf" file included with Tux Paint.
+  * macOS
+      + The path specified by the "FONTCONFIG_PATH" environment variable, if
+        set.
+  * Haiku
+      + /boot/system/settings/fonts/fonts.conf
+  * Linux/etc.
+      + The path specified by the "FONTCONFIG_PATH" environment variable, if
+        set.
+      + If the above fails, then "/etc/fonts/fonts.conf".
+      + The path specified by the "XDG_CONFIG_HOME" environment variable, if
+        set. There, it looks for the file "fontconfig/fonts.conf".
+      + If the above fails, then "$HOME/.config/fontconfig/fonts.conf".
+
+Each FontConfig configuration file ("fonts.conf") is examined for "<dir>" tags
+that specify directory (folder) paths where fonts might be found, and Tux Paint
+scans them and loads the fonts. If a "prefix" attribute is included in the tag,
+Tux Paint prefixes the path accordingly.
+
+→ xdg ←
+    The directory path specified is considered to be relative to the user's
+    local data path, specified by the "XDG_DATA_HOME" environment variable. If
+    not set, then ".local/share" under the path specified by the "HOME"
+    environment variable will be used, if it exists.
+     
+→ relative ←
+    The directory path specified is considered to be relative to the
+    configuration file itself.
+     
+→ default, cwd, or no "prefix" attribute specified ←
+    The directory path specified is considered to be relative to the current
+    working directory (where Tux Paint is running), unless a root path is
+    included at the start (e.g., "/", "C:\\", etc.)
+     
 
 'Starters'
 

docs/is_IS.UTF-8/README.txt

@@ -6,7 +6,7 @@
         Copyright © 2002-2025 by various contributors; see AUTHORS.txt.
                              https://tuxpaint.org/
 
-                                 maí 26, 2025
+                                 júní 8, 2025
 
 +-------------------------------------------------+
 |                Table of Contents                |
@@ -480,6 +480,9 @@ e."Text" and "Label" Tools ←
     font, color, and styling while entering the text, before it is applied to
     the canvas.)
 
+    ⚙ See the "Extending Tux Paint" documentation for information on where Tux
+    Paint searches for fonts.
+
     Press [Enter] or [Return] and the text will be drawn onto the picture and
     the cursor will move down one line.
 

docs/is_IS.UTF-8/html/ENVVARS.html

@@ -231,6 +231,9 @@
         On Linux and other platforms where the X Desktop Group standards are used, the location of the user's configuration files. It is used to find a user-specific "<code>fonts.conf</code>" configuration file.      </dd>
     </dl>
 
+    <p class="note">
+      <span title="Configuration option">&#9881;</span>      See the "<a href="EXTENDING.html"><em>Extending Tux Paint</em></a>" documentation for information on where Tux Paint searches for fonts.    </p>
+
   </body>
 </html>
 

docs/is_IS.UTF-8/html/README.html

@@ -102,7 +102,7 @@
           </p>
 
           <p>
-            maí 26, 2025          </p>
+            júní  8, 2025          </p>
         </center>
       </header>
       <table border="2"
@@ -813,6 +813,9 @@
   <p>
     Choose a font (from the 'Letters' available on the right) and a color (from the color palette near the bottom). You may also apply a bold, and/or an italic styling effect to the text. Click on the screen and a cursor will appear. Type text and it will show up on the screen. (You can change the font, color, and styling while entering the text, before it is applied to the canvas.)  </p>
 
+  <p class="note">
+    <span title="Configuration option">&#9881;</span>    See the "<a href="EXTENDING.html"><em>Extending Tux Paint</em></a>" documentation for information on where Tux Paint searches for fonts.  </p>
+
   <p>
     Press <b><code>[Enter]</code></b> or <b><code>[Return]</code></b> and the text will be drawn onto the picture and the cursor will move down one line.  </p>