PlantUML: Add legend to the diagram

‘legend’ and ‘end legend’ keywords are used to put a legend to the diagram.

A legend location can be specified using below keywords combination.

a.   left

b.   right

c.    top

d.   botto

e.   center

 

legend.txt

@startuml

legend top center
	short legend
	on center
end legend

Client -> LoginServer: Enter user name
Client -> LoginServer: Enter password
Client -> LoginServer: Submit the form 
LoginServer -> ADServer: Check the credentials
ADServer -> LoginServer: Login Successful
LoginServer -> Client: Login Successful

@enduml

Above snippet generate below diagram.

 

  

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