Asimov was his own secretary, typist, indexer, proofreader, and literary agent. Sphinx is configured to examine a data set via its Indexer. The company entered the machine tool industry with the first fully automatic, programmable collet indexer. The indexer scans through text columns in the database. Help index files are generated with Help Indexer. Software is available to aid the indexer in building a book index. His name is an acronym for Referential Universal Digital Indexer. In Windows 7, it has been replaced by a newer Windows Search indexer. Since then, he has supported himself as a freelance indexer for university presses. The name initially stood for "Yet Another iNDEXer". In March 1983, he displayed his indexer at WESTEC (an industry expo). An indexer can be found for any subject.