Info-indexInfo-index is an interactive autoloaded compiled Lisp function in `
info.el'. (Info-index TOPIC) Look up a string TOPIC in the index for this manual and go to that entry. If there are no exact matches to the specified topic, this chooses the first match which is a case-insensitive substring of a topic. Use the , command to see the other matches. Give an empty topic name to go to the Index node itself.