PlantUML: add notes to the components, interfaces in a component diagram

Following keywords used to add notes to the components.

a.   note left of

b.   note right of

c.    note top of

d.   note bottom of

 

Examples to add notes to components

note left of [Order] : Order management system

note right of [Customer] 
	Customer management system
	holds customer details
end note

note bottom of [Product] : product management system

 

Examples to add notes to interfaces

note right of ProductCode: access via https
note right of CustomerDetails: access via https

addNotes.txt

@startuml

[Order]
[Customer]
[Product]

interface ProductCode
interface CustomerDetails

[Order] -- CustomerDetails
CustomerDetails --> [Customer]

[Order] -- ProductCode
ProductCode --> [Product]

note left of [Order] : Order management system

note right of [Customer] 
	Customer management system
	holds customer details
end note

note bottom of [Product] : product management system

note right of ProductCode: access via https
note right of CustomerDetails: access via https

@enduml

Above snippet generate below diagram.

 

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