ristiviite
Ristiviite is a Finnish term that translates to "cross-reference" in English. It is a technique used in various forms of documentation, writing, and information management to connect related pieces of information. Essentially, a ristiviite directs the reader from one point in a text or document to another, suggesting that further or related information can be found elsewhere.
This practice is common in books, especially non-fiction and reference materials, where an author might refer