For my work on the history of hypertext systems and the WWW I cam across one sentence on the development of HTTP which I don't understand and where I could not find any information about:
Page 55: (bold marking from me)
A new search and retrieve (SR) protocol, known as HTTP, was found to be necessary. Faster than FTP for document retrieval, HTTP also allows index search. HTTP is similar in implementation to the Internet protocols above and similar in functionality to the WAIS protocol. Some differences are discussed below.
The paper can be accessed here for free: