[From string (line 12) ]                                               
                                                                       
@startuml                                                              
skinparam strict uml                                                   
rectangle {                                                            
usecase "Manage users" as UC                                           
usecase "Create user" as UCC                                           
usecase "View user" as UCR                                             
usecase "Update user" as UCU                                           
usecase "Delete user" as UCD                                           
note "{The actor must be of kind Super administrator}" as C1           
UCD .. C1                                                              
C1 .. C0                                                               
usecase "x" as C0                                                      
^^^^^                                                                  
 This element (C0) is already defined (Assumed diagram type: component)