occurrence exists, Emacs beeps and tells you the search is currently
"failing". C-g would also terminate the search.
-If you are in the middle of an incremental search and type <DEL>, this
-the search "retreats" to an earlier location. If you type <DEL> just
+If you are in the middle of an incremental search and type <DEL>, the
+search "retreats" to an earlier location. If you type <DEL> just
after you had typed C-s to advance to the next occurrence of a search
string, the <DEL> moves the cursor back to an earlier occurrence. If
there are no earlier occurrences, the <DEL> erases the last character