As I was ignorant of the month in which Sir Percival was born, I began my backward search
with the early part of the year.
He finds the explanation not in the onward march of technology but in their backward search
for inspiration, in traditional cultural values, in attitudes to how war should be waged, and in particular in their attitudes to the heroic past.
Many search engines have a backward search
function Plug in as address and see how many have linked to it.
To extract a plan if any, a backward search
WebCrawler has another feature that is useful to users with their own home pages: a backward search
function, which reports on who linked to your home page so you can keep track of visitors as a marketing tool.