thunderbird: hide/show message pane

wiki/linux/x_window_system.md

@@ -101,7 +101,9 @@ If there are two main layouts are used then the following command can be used to
 them.
 Change `<layout 1>` and `<layout 2>` according to preferences.
 
-`setxkbmap -query | grep -q '<layout 1>' && setxkbmap <layout 2> || setxkbmap <layout 1>
+```sh
+setxkbmap -query | grep -q '<layout 1>' && setxkbmap <layout 2> || setxkbmap <layout 1>
+```
 
 Using [SXHKD](/wiki/linux/sxhkd.md) a hotkey can be setup to seamlessly transition between the two
 layouts.

wiki/thunderbird.md

@@ -29,14 +29,14 @@ The following is a list of useful extensions for Thunderbird.
 - "Signature Switch" is an extension which adds different signatures for different purposes and
   allows easy and automatic switching between them.
 
-### Hide Completed Tasks
+### Hide/Show Completed Tasks
 
 Under the tasks tab it is possible to show only incomplete tasks aswell as other specific tasks
 using the selection on the left hand site of the screen.
 Alternatively complete tasks can be hidden by selecting "View" in the top bar, then "Tasks" and
 finally "Incomplete Tasks".
 
-### Hide Local Folders
+### Hide/Show Local Folders
 
 This section is based on a
 [forum post by Mapenzi](https://www.thunderbird-mail.de/forum/thread/92315-115-lokale-ordner-ausblenden/?postID=518346#post518346).
@@ -48,13 +48,22 @@ Message`-button and selecting `Hide Local Folders`.
 The order of the folders of an account can be reset by right-clicking the account in the Mail-tab
 and then selecting `Reset Folder Order`.
 
-### Hide Default Address Book
+### Hide/Show Default Address Book
 
 This section is based on a
 [blog post by Attiks](https://tips.attiks.com/2018/05/03/thunderbird-hide-default-address-book).
-By default thunderbird uses an address book called `Personal Address Book`.
+By default Thunderbird uses an address book called `Personal Address Book`.
 When using a remote address book which is synced the default address book is often not needed.
 It can be hidden by selecting `Edit` (if the top bar is not visible `Alt` can be pressed to display
 it), `Settings` and `Config Editor...`.
 In the config editor search for the value `ldap_2.servers.pab.dirType` and set the value from the
 default (which is `101`) to `-1` to hide the default address book.
+
+### Hide/Show Message Pane
+
+This section is based on a
+[Mozilla Support Question by hgosnell](https://support.mozilla.org/en-US/questions/1122496).
+By default Thunderbird will show a preview for mails on the right hand side when selecting it.
+This is called the message pane.
+It can be hidden by drag and drop or by pressing the F8-key.
+Using the same key it can also be shown again.