Many aspects of reports define a context, which specifies what they refer to.

This is an example of a report pointing at a Website context, i.e. a single website:

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This is an example of a report pointing to a Websites context, i.e. multiple websites matching some criteria, like specific tags:

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Purpose

Widgets require a context to know what they are reporting on. For example:

Report contexts are used in three places:

Context types

Website context

Websites context