Functional-Requirements.md

@@ -56,8 +56,6 @@ US-17 As a librarian I want to be able to create educational quizzes for the exh
 
 [US-20](https://gitlab.com/Eliisabet/interactive-environment-for-online-exhibitions/-/issues/74 "US-20 Confirmation when discarding unsaved changes") As a librarian, I want the environment to warn me before discarding unsaved changes so that I don't accidentally lose progress.
 
-US-21 As a librarian, I want to be able to tag exhibition items with metadata (such as title, creator, date, and medium) so that users can understand the context of the exhibition pieces.
-
 ## Could-have
 
 #### Viewing the exhibitions
@@ -84,6 +82,8 @@ US-30 As a librarian, I want to be able to display 3D models in the exhibition s
 
 #### System requirements
 
+US-21 As a librarian, I want to be able to tag exhibition items with metadata (such as title, creator, date, and medium) so that users can understand the context of the exhibition pieces.
+
 US-31 As a system administrator, I want to track user interactions (e.g., views, clicks) so that I can analyze which exhibitions are most popular.
 
 US-32 As a librarian, I want to schedule the publication of exhibitions so that they automatically go live at a specific date and time.
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