-from the gopher server) are recorded with the corresponding node. The
-cursor position (point) is also stored. If the node is visited again,
-the cached contents are displayed and the cursor returns to its
-previous position. This makes navigating amongst different documents
-referenced from within the same directory very snappy.
-
-## Licence
+from the gopher server) are recorded in memory with the corresponding
+node. The cursor position (point) is also stored. If the node is
+visited again in the same session, the cached contents are displayed
+and the cursor returns to its previous position. This makes
+navigating amongst different documents referenced from within the same
+directory very snappy. (To conserve memory, this caching isn't by
+default applied to images entries viewed in the browser.)
+
+This hierarchy is also maintained when gopher URLs are followed from plain
+text documents, and when directories are retrieved explicitly using the 'g'
+key. When it is viewed, the bookmark page also becomes a part of this
+hierarchy.
+
+Licence
+-------