diff --git a/cave_data/BAD-URLS.txt b/cave_data/BAD-URLS.txt
new file mode 100644
index 000000000..6e7428712
--- /dev/null
+++ b/cave_data/BAD-URLS.txt
@@ -0,0 +1,8 @@
+1623-1989-01.html:<url>1989-01.html</url>
+1623-1990-15.html:<url>1990-15.html</url>
+1623-232.html:<url>232.html</url>
+1623-233.html:<url>233.html</url>
+1623-252.html:<url>252.html</url>
+1623-BS1-15.html:<url>bs1-15.html</url>
+1623-BS18.html:<url>bs18.html</url>
+1623-BS20-nn.html:<url>bs20-nn.html</url>
diff --git a/handbook/computing/basiclaptop.html b/handbook/computing/basiclaptop.html
index af0ed2f3e..bebff35e7 100644
--- a/handbook/computing/basiclaptop.html
+++ b/handbook/computing/basiclaptop.html
@@ -31,10 +31,10 @@
 </ul>
 <p>and of course using your phone or laptop you can update entries on expo antics on public forums such as ukcaving.
 
-<p>If you also have Survex and Therion installed on the laptopo, you can do nearly everything for initial cave survey data entry. See the 
+<p>If you also have Survex and Therion installed on the laptop, you can do nearly everything for initial cave survey data entry. See the 
 <a href="yourlaptop.html">expo data maintenance</a> installation instructions for Survex and Therion. (These will be moved to a different page in the handbook soon).
 
-<p>We are actively working on increasing the number of expo activities that can be done with just a browser and no installed software.
+<p>We are actively working on increasing the number of expo activities that can be done with just a browser and no, or minimal, installed software.
 
 <h3>Which laptop do you need?</h3>
 <p>If you have not actively used troggle since 2018, you are probably not aware of <a href="#any">all the things</a> you can now do with just a 
diff --git a/katast.htm b/katast.htm
index 66b60c3a8..e5ecd4d14 100644
--- a/katast.htm
+++ b/katast.htm
@@ -52,7 +52,7 @@ fabricated aluminium tags with our own internal number as a temporary
 measure during early exploration; our practices are documented in the <a
 href="handbook/look4.htm">Prospecting Handbook</a>. Once a cave has been
 accurately located and explored sufficiently to count as a significant find, a
-<a href="expofiles/documents/example_kataster_form.odg">form</a> is filled out and sent to
+<a href="expofiles/documents/surveying/example_kataster_form.odg">form</a> is filled out and sent to
 the VfHO, who will allocate a final kataster number.</p>
 
 <p>If caves have been explored by groups not recognised by the local cavers,