diff --git a/system/xdg.md b/system/xdg.md
index cd15931..a59a623 100644
--- a/system/xdg.md
+++ b/system/xdg.md
@@ -1,11 +1,13 @@
 ---
 title: "xdg"
-tags: [ "Documentation", "System" ]
+tags: [ "Documentation", "Defaults", "System" ]
 ---
 
+Tab is your friend.
+
 What filetype is this file?
 
-> xdg-mime query filetype aif.pdf
+> xdg-mime query filetype *somefile.pdf*
 
 `application/pdf`
 
@@ -13,3 +15,7 @@ Make `application/pdf` open with zathura as default:
 
 > xdg-mime default org.pwmt.zathura.desktop application/pdf
 
+Ask what happens with a filetype:
+
+> xdg-mime query default audio/mp3
+