THE PLAN web portal uses TAGs to identify the main characteristics of each article that is published: architect who designs the project, company that participated in the intervention, photographer of the published images, location of the work (city, country, continent), year in which it was completed, building type or product category to which it belongs, materials and construction technologies, section of the website where the article is located. TAGs are also a useful tool for searching the website's database by selecting, in one or more fields, the information at hand to find a particular project or set of projects.