Update search methods and features in documentation

Author: fho4abcd

docs/abcd-modules/cataloguing/manual/searching.md

@@ -61,6 +61,20 @@ Options in the index window:
 - Select one or more terms and `Copy terms`. Copies the term(s) to the search form. Multiple terms are connected by **or**.
 - Type the first few characters  in the `Go to` box and `Enter`. Moves the list to the indicated term.
 
+### Result window
+
+- Search results are collected in a list that can be browsed.
+- On top of this page the record toolbar is shown for all kinds of edits
+- Button `Expression` can be used to modify/save the search expression
+![Index window](../../../media/abcd-modules/cataloguing/manual/data-entry/forms-search-edit-sav-expression.png)
+- The text of the search expression can be modified and button`Search` will execute the modified expression
+- Button `Refine` shows [Search](#2-search)
+- An expression can be saved by entering a name in `Description` followed by `save search expression`
+
+A saved expression can be used by ![Copy expression](../../../media/abcd-modules/cataloguing/manual/data-entry/but-warehouse.png).
+This shows a pop-up to copy a stored expression. ![Index window](../../../media/abcd-modules/cataloguing/manual/data-entry/forms-search-copy.png)
+
+
 ---
 
 ## 3. Search History
@@ -171,3 +185,4 @@ In bibliographic databases mostly the title field.
 
 
 
+