diff --git a/editions/tw5.com/tiddlers/about/History of TiddlyWiki.tid b/editions/tw5.com/tiddlers/about/History of TiddlyWiki.tid
index b5ef197ff..a06939805 100644
--- a/editions/tw5.com/tiddlers/about/History of TiddlyWiki.tid	
+++ b/editions/tw5.com/tiddlers/about/History of TiddlyWiki.tid	
@@ -6,7 +6,7 @@ type: text/vnd.tiddlywiki
 
 //These are personal reflections on the history and development of TiddlyWiki from JeremyRuston.//
 
-//There is also a [[podcast|https://changelog.com/196/]] discussing TiddlyWiki's backstory.//
+//There is also a [[podcast from 2016|https://changelog.com/podcast/196]] discussing TiddlyWiki's backstory as well as a [[recording from 2021|https://twit.tv/shows/floss-weekly/episodes/620]].//
 
 ! Origins of TiddlyWiki
 
diff --git a/editions/tw5.com/tiddlers/community/resources/Hosting TiddlyWiki5 on GoogleDrive.tid b/editions/tw5.com/tiddlers/community/resources/Hosting TiddlyWiki5 on GoogleDrive.tid
deleted file mode 100644
index 32a889751..000000000
--- a/editions/tw5.com/tiddlers/community/resources/Hosting TiddlyWiki5 on GoogleDrive.tid	
+++ /dev/null
@@ -1,14 +0,0 @@
-created: 20140315085406905
-modified: 20210106151027120
-tags: Tutorials
-title: "Hosting TiddlyWiki5 on GoogleDrive" by Tony Ching
-type: text/vnd.tiddlywiki
-url: https://googledrive.com/host/0B51gSXixfJ2Qb0I4R2M4MWJVMlU
-
-Tony Ching's quick guide for sharing TiddlyWiki with Google Drive.
-
-{{!!url}}
-
-<<<
-Anyway your self-contained a non-linear personal web notebook can be hosted on Google Drive, a free cloud service from Google.com. Because TiddlyWiki5 now supports the Stanford Javascript Crypto Library (SJCL), you can encrypt your content from prying eyes (excluding the NSA of course)
-<<<
diff --git a/editions/tw5.com/tiddlers/concepts/PermaLinks.tid b/editions/tw5.com/tiddlers/concepts/PermaLinks.tid
index 5127228d6..40c7a1925 100644
--- a/editions/tw5.com/tiddlers/concepts/PermaLinks.tid
+++ b/editions/tw5.com/tiddlers/concepts/PermaLinks.tid
@@ -1,5 +1,5 @@
 created: 20140502213500000
-modified: 20160622111355787
+modified: 20210406131243532
 tags: Features Concepts
 title: PermaLinks
 type: text/vnd.tiddlywiki
@@ -32,7 +32,7 @@ If the target tiddler isn't present in the story list then it is automatically i
 
 It is also possible to specify a story filter without specifying a target tiddler for navigation:
 
-<a href="https://tiddlywiki.com/#:[tags[task]]" rel="noopener noreferrer">~https://tiddlywiki.com/#:[tags[task]]</a>
+<a href="https://tiddlywiki.com/#:[tag[task]]" rel="noopener noreferrer">~https://tiddlywiki.com/#:[tag[task]]</a>
 
 ! About URL encoding
 
diff --git a/editions/tw5.com/tiddlers/webserver/WebServer API_ Delete Tiddler.tid b/editions/tw5.com/tiddlers/webserver/WebServer API_ Delete Tiddler.tid
index 962d74902..523012553 100644
--- a/editions/tw5.com/tiddlers/webserver/WebServer API_ Delete Tiddler.tid	
+++ b/editions/tw5.com/tiddlers/webserver/WebServer API_ Delete Tiddler.tid	
@@ -1,5 +1,5 @@
 created: 20181002112106875
-modified: 20181002124355314
+modified: 20210418100750769
 tags: [[WebServer API]]
 title: WebServer API: Delete Tiddler
 type: text/vnd.tiddlywiki
@@ -14,6 +14,10 @@ Parameters:
 
 * ''title'' - URI encoded title of the tiddler to delete
 
+Headers:
+
+* ''x-requested-with'' - must be set to `TiddlyWiki` in order for the request to succeed, unless [[WebServer Parameter: csrf-disable]] is set to `yes`
+
 Response:
 
 * 204 No Content
\ No newline at end of file
diff --git a/editions/tw5.com/tiddlers/webserver/WebServer API_ Put Tiddler.tid b/editions/tw5.com/tiddlers/webserver/WebServer API_ Put Tiddler.tid
index 8bdedcf3b..d9c774bdb 100644
--- a/editions/tw5.com/tiddlers/webserver/WebServer API_ Put Tiddler.tid	
+++ b/editions/tw5.com/tiddlers/webserver/WebServer API_ Put Tiddler.tid	
@@ -1,5 +1,5 @@
 created: 20181002131341062
-modified: 20181002131556452
+modified: 20210418100750769
 tags: [[WebServer API]]
 title: WebServer API: Put Tiddler
 type: text/vnd.tiddlywiki
@@ -16,6 +16,10 @@ Parameters:
 
 * ''title'' - URI encoded title of the tiddler to save
 
+Headers:
+
+* ''x-requested-with'' - must be set to `TiddlyWiki` in order for the request to succeed, unless [[WebServer Parameter: csrf-disable]] is set to `yes`
+
 Response:
 
 * 204 No Content