Then, when the search algorithm reads the database, these values are used to help rate the hits. Articles written in Spanish can be emphasized for Latin American audiences. Online documents with images can be devalued to discourage long downloads. Advertisers want their products to appear more relevant than competitors , and authors might think explanations are more desirable than definitions. These opinions usually reveal themselves only after reviewing results to a few inadequate searches.
Writers can add editorial values to the records for the algorithm to consider.
Editorially chosen text, called keywords, is added into each database record. Then, the search algorithm considers only these keywords, and not the documentation itself. Further, the keywords can be collected into a standalone document and scanned by users, as a replacement for searching. This is how indexes are built for online help documentation. With careful keyword selection, a more accurate search is almost guaranteed.