What does the page rank metric help to measure in Semrush?

In Semrush, the Page Rank metric (often referred to as "Internal PageRank" or "LinkRank") is designed to estimate a page's authority within a website based on its internal link profile. It considers both the quantity and quality of internal links pointing to a page, much like Google's original PageRank algorithm. Therefore, it helps measure how authoritative a page is within the site's structure and how many internal links a page on a website has. While external backlinks contribute to a page's overall authority, Semrush's Page Rank specifically focuses on the internal linking aspect. "Whether a page is an orphaned page" is a related concept but not directly what Page Rank measures; orphaned pages would simply have a very low or zero Page Rank. "An indicator of how many outgoing internal links a page on a website has" is incorrect because Page Rank measures incoming links, not outgoing.