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You can link directly to an anchor from other content items. This is useful if you want a visitor to be able to link directly to a heading within another content item instead of landing at the top of the linked content item. See Headings as Anchors for complete information.
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Link Codes
Each hyperlink created in a content item is assigned an internal link code. Link codes apply only to the current content item. The naming pattern of link codes is "C0x" where "x" begins at 1 and increases by 1 for each new link (C01, C02, C03, and so forth). The reason this is done is that a link code can be assigned to the content elements Image, List and Table which makes the entire content element a link itself. For example,