Back in Time / Forward in Time links are available from all Reuters news feed articles, and from all World News Digest articles that have been assigned to Browse News pages (By Topic, By Landmark Event, By Country, or By Person).
When a World News Digest article* or a Reuters news feed article is accessed from any of the browse pages, special links appear in the right rail of the article, beneath the page tools. Clicking those links allows the user to follow developments chronologically. Those links will also appear in articles accessed via search, but they are not available for articles accessed from News Media Roundups.
*Please note the links are not available in articles from the Background links that appear in the right rail of the Browse News pages.