Bar-Displays.md

 A bar display is a text element that is attached to a bar. There are two different types of displays, external and internal.
 
 ## External Display
+External displays can be two different types, `prefix` and `suffix`.
+
+```
+    external-display:
+      type: prefix
+      offset: 0
+      text: \uF000
+```
 
 ## Internal Display
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