Research area markers are defined as specific indicators or labels used to categorize and identify different areas of research within a particular field or discipline. These markers help researchers and academics to more easily navigate and locate relevant literature, experts, and resources within a given research field. They can include keywords, subject headings, topics, themes, methodologies, or specific research focus areas. Research area markers are essential for organizing, classifying, and communicating the key aspects of a research field, enabling researchers to connect with others and contribute to the advancement of knowledge in their respective areas of interest.