@startuml  analysis3
skinparam handwritten true
skinparam monochrome true
skinparam packageStyle rect
skinparam defaultFontName FG Virgil
skinparam shadowing false



alt from edit to preview

actor User

	User -> Browser : change to preview mode
    Browser -> Browser : show preview page
	
else from preview to edit

    User -> Browser : change to edit mode
    Browser -> Browser : show edit page

end
@enduml