*** `C-x 8 RET' in Isearch mode reads a character by its Unicode name
and adds it to the search string.
-*** `M-s i' toggles the variable `isearch-invisible' between nil and
-the value of the option `search-invisible' (or `open' when it's nil).
+*** `M-s i' in Isearch mode toggles the variable `isearch-invisible'
+between nil and the value of the option `search-invisible' (or `open'
+when it's nil).
*** `query-replace' skips invisible text when `search-invisible' is nil,
and opens overlays with hidden text when `search-invisible' is `open'.