http://www7.informatik.uni-erlangen.de/tree/IMMD-VII/i7-pictogram.html (Einblicke ins Internet, 10/1995)
Peter Dauphin,
Vassilis Mertsiotakis,
12/16/93
The pictogram always
brings you back to the previous page (the home page of the
IMMD7).
It is oftenly displayed on the top of pages.
This and other similar pictograms help you to jump to certain
WWW subtrees without tedious navigation.