diff --git a/handbook/computer.html b/handbook/computer.html
index 21475bb18..8f7882dbe 100644
--- a/handbook/computer.html
+++ b/handbook/computer.html
@@ -10,8 +10,8 @@
 
 <h1>Expo computing setup</h1>
 <div align=center>
-<p>If the internet is not working, the <b>first thing to check</b> is that<br>the black WiFi antenna is 
-still upright and has not been knocked sideways.
+<p>If the internet is not working, the <b>first thing to check</b> is that<br>the black WiFi antennae are 
+still upright and have not been knocked sideways.
 </div>
 <br>
 
@@ -35,11 +35,11 @@ thinks you have been on too long. Get instructions from the Gasthof campsite rec
 </div>
 <h3>Expo laptop</h3>
 
-<p>The <em>Expo laptop</em> 'debian' in the tatty hut is a Dell Latitude E4200 laptop (on loan from Philip
+<p>The <em>Expo laptop</em> in the tatty hut is a Dell Latitude E4200 laptop (on loan from Philip
 Sargent) which is connected to the router by a cable and also by WiFi
 (it's wifi configuration was fixed by Sam in 2019). It
 also has an external numberpad as a couple of vital keys are dead
-(e.g. down-arrow). It runs Linux (debian) and has installed all the software
+(e.g. down-arrow). It runs Linux (Debian) and has installed all the software
 for talking to the server for:
 
 <ul>
@@ -77,21 +77,20 @@ Configuring the scanner to be used via WiFi is yet to be done, but the printer i
 directly but we haven't got this configured properly yet.) Use a usb stick to transfer files for printing
 if you can't get your own laptop or phone to work with the printer.
 
-<h3>The Expo Laptop's Friend: Aziraphale</h3>
-<p>In 2019 we had another general-use laptop. This is not connected by any cabling and just uses WiFi. Like the <i>expo laptop</i> it is running debian Linux and has the same set of software installed 
-    (survex/aven, tunnelx, therion, git etc.) and you login to it using the username "expo" and the usual cavey:beery password. It is a 14-inch Thinkpad on loan from Michael Sargent and it is called "aziraphale". The <i>expo laptop</i> is just called "debian". 
+<h3>The Expo Laptops: Crowley's Friend: Aziraphale</h3>
+<p>In 2023 we have another general-use laptop (it was also in use in 2019). This is not connected by any cabling and just uses WiFi. Like the <i>expo laptop</i> it is running debian Linux and has the same set of software installed 
+  (survex/aven, tunnelx, therion, git etc.) and you login to it using the username "expo" and the usual cavey:beery password. It is an R61 14-inch Thinkpad on loan from Michael Sargent and it is called "Aziraphale". The <i>expo laptop</i> is  called "Crowley". Crowley has a 64GB microSD card  plugged into it which holds the local copy of <var>/expofiles/</var> but Azirophale does not have a working SD-card slot and its hard drive is too small to hold <var>/expofiles/</var>. 
 
 <h3>Networking Hardware - experts only</h3>
 
 <p>The networking hardware is an Acer Aspire netbook which keeps us logged in to the Gasthof and does firewalling
 to provide local connectivity and local WiFi. The antenna which we use to connect to  the Staudnwirt WiFi 
-is a ~32cm long black stick mounted on a small shelf high 
-above the sink/stove area and connected via a usb cable to the Acer netbook. There is no separate router: it is all done by the Acer notebook.</p>
+is a dual antenna WiFi tiny black box on a small shelf high above the sink/stove area and connected via a usb cable to the tiny dark-blue Acer netbook 'tclaspire3'. There is no separate router: routing is all done by this Acer notebook.</p>
 
 
 <p>The potato hut WiFi is running DHCP and allocating IP addresses of the form 192.168.1.x where x is a number between 11 and 99 .
-<p>The <em>Expo laptop</em> has a dynamic local address of this form. 
-It has a 64GB microSD card  plugged into it which holds the local copy of /expofiles/ .
+<p>The <em>Expo laptops</em> have a dynamic local address of this form, as does any other laptop connecting to this WiFi.
+
 <p>The Acer Aspire netbook ("tclaspire3")  is on a static address <a href="http://192.168.1.100/">192.168.1.100</a>. 
 <p>The Gasthof WiFi - which you can still use - is "StaudnGast" and has no WiFi password but there is a login webpage. It allocates IP addresses in the range
 192.168.2.x etc. The antenna is now on the first-floor balcony within