Merge remote-tracking branch 'origin/doc-tagcloud' into doc-overhaul

diff --cc doc/md/Browsing-and-searching.md
index bda619e1c73dfed0a82c872bbe33c8a85965f99e,24483139d73ee08fa52eb8abb1f81eb0acdb162a..f948bbe190e40f59469e2dc3b5630c4e2c4ef7bc
--- 1/doc/md/Browsing-and-searching.md
--- 2/doc/md/Browsing-and-searching.md
+++ b/doc/md/Browsing-and-searching.md
@@@ -20,4 -25,13 +25,13 @@@ The `Tag cloud` page diplays a "cloud" 
  
  ## Filtering RSS feeds/Picture wall
  
 -RSS feeds can also be restricted to only return items matching a text/tag search: see [RSS feeds](RSS feeds).
 +RSS feeds can also be restricted to only return items matching a text/tag search: see [RSS feeds](RSS-feeds).
+ 
+ ## Filter buttons
+ 
+ Filter buttons can be found at the top left of the link list. They allow you to apply different filters to the list:
+ 
+  * **Private links:** When this toggle button is enabled, only shaares set to `private` will be shown.
+  * **Untagged links:** When the this toggle button is enabled (top left of the link list), only shaares _without any tags_ will be shown in the link list.
+  
+ Filter buttons are only available when logged in.