What does "SC" stand for in webpage content classification?

In webpage content classification, "SC" stands for Supplementary Content. This term refers to content that is not the main focus of a page but provides additional information or context that enhances the user experience. Supplementary content can include related articles, links, sidebars, or additional resources that support the primary content.

Understanding this classification is important because it helps evaluators determine how effectively a webpage presents its main topic while also supporting that topic with relevant additional information. This distinction helps ensure that users receive a comprehensive understanding of the subject matter without being overwhelmed by secondary details.

The other terms, while they might suggest types of content, do not precisely capture the essence of what "SC" represents in this context. Each of those options presents a different aspect of content classification but doesn't align with the widely accepted definition of supplementary content, which focuses on supporting the main content rather than being a primary or essential component of the webpage.