The relation of view and viewport and camera?

Can anyone give me a clear and detial explain about the view? and it’s common use Rhinocommon SDK methods?
Thank you!

A “view” represents a single “window” display of a document. A view could contain one or many “viewports”, as is the case with layout views. Standard Rhino modeling views have one viewport.

A “viewport” displays geometry with a given projection.

A “camera” consists of several pieces of data (location, target, up direction, etc.) that are stored on a viewport and that define how the geometry in the viewport is displayed.

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Following up on Dale, you may want to look at the following wiki paper:

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Thank you! That’s useful for me!