diff --git a/cave_data/1623-283.html b/cave_data/1623-283.html
index 48685f281..c9df6ce6d 100644
--- a/cave_data/1623-283.html
+++ b/cave_data/1623-283.html
@@ -13,7 +13,7 @@
 <area>1623</area>
 <area>6</area>
 <kataster_code>2/S +</kataster_code>
-<kataster_number></kataster_number> 
+<kataster_number>283</kataster_number> 
 <unofficial_number>BS17</unofficial_number>
 
 <entrance>
diff --git a/handbook/computing/yourlaptop.html b/handbook/computing/yourlaptop.html
index 68afb485e..553e6898d 100644
--- a/handbook/computing/yourlaptop.html
+++ b/handbook/computing/yourlaptop.html
@@ -146,11 +146,31 @@ to <a href="https://blog.shvetsov.com/2010/03/making-pageant-automatically-load-
 </ul>
 <p>When using Windows please, please be <a href="http://expo.survex.com/handbook/survey/getin.htm#filenames">excessively careful when naming files and survex names</a> and be <a href="manual.html#quickstart">exceptionally careful when using rsync</a>.
 
-<p>The handbook has documents where it is necessary to use scp or sftp to manage large files in 'expofiles'. 
-  See <a href="../upload-expert.html">Experts: Uploading files</a>, 
-  <a href="../uploading.html">Uploading files</a> and  <a href="../gpxupload.html">Uploading GPS tracks</a>. 
-  Only machines which have done the key-pair setup process can do scp, sftp or rsync.
-  </p>
+  <p>The handbook has documents where it is necessary to use scp or sftp to manage large files in 'expofiles'. 
+    See <a href="../upload-expert.html">Experts: Uploading files</a>, 
+    <a href="../uploading.html">Uploading files</a> and  <a href="../gpxupload.html">Uploading GPS tracks</a>. 
+    Only machines which have done the key-pair setup process can do scp, sftp or rsync.
+    </p>
+
+<h4>Cheap hack for Linux</h4>
+<p>On a Linux machine, it will not be necessary once you have everything set-up correctly, but 
+a useful initial short-cut is to create 'mimic' symbolic links to directories to match those on the
+server and the <em>expo laptop</em>. 
+(You should not rely on these as other people will have set up their machines differently.) 
+So, assuming that your machine has 
+no user <var>expo</var>:<pre><code>cd /home
+sudo mkdir expo
+cd expo
+sudo ln -s /mnt/f/expofiles expofiles
+sudo ln -s /mnt/d/CUCC-Expo/expoweb expoweb
+sudo ln -s /mnt/d/CUCC-Expo/troggle troggle
+sudo ln -s /mnt/d/CUCC-Expo/loser loser
+ls -tlA
+</code></pre>
+where obviously you will be using your own locations for expofiles, expoweb, loser etc. instead of <var>/mnt/d/CUCC...</var> etc. This creates valid directory paths for, e.g. <var>/home/expo/loser</var> etc.
+</p>
+
+