Type in a few keywords in the search pane. I just tried "filename http" -- the top link, describing the FILENAME URL access method, was just what I was looking for.
This is the culmination of years of work to transition SAS' primary documentation medium from printed books to electronic documentation. I am proud to have played a small part in the early days of this -- it was about 12 years ago that I smuggled the SAS Companion for Windows into the online help system for SAS on the PC -- that was in the late days of version 6, early version 7. I've been out of that biz for a long time, but the progress has continued steadily.
The new library of online documentation is a huge leap. I talked to someone last night who still keeps the version 5 manual on his shelf because it contains the whole of SAS documentation as it was at that time. I appreciate the nostalgia, but I think from now on I'll keep my documentation in my web browser.