Refine information on String constants

en/Strings.md

@@ -7,13 +7,55 @@ helpCategories: ["Fields"]
 
 *BibTeX* supports storing constant strings using `@String {key = value}`. JabRef supports managing them using **BibTeX → Edit strings**, which opens the [String Editor](StringEditor). These values can be used in fields. For example, you can have:
 
-    @String { kopp = "Kopp, Oliver" }
-    @String { kubovy = "Kubovy, Jan" }
-    @String { et = " and " }
+```bibtex
+@String { kopp = "Kopp, Oliver" }
+@String { kubovy = "Kubovy, Jan" }
+@String { et = " and " }
+```
+
+and then in some entry for example: 
+
+```bibtex
+@Misc{m1,
+  author = kopp # et # kubovy,
+}
+```
+
+or
+
+```bibtex
+@Misc{m2,
+  author = kopp # " and " # kubovy,
+}
+```
 
-and then in some entry for example: `@Misc{m1, author = kopp # et # kubovy }` or `@Misc{m2, author = kopp # " and " # kubovy }`.
 In the JabRef field editor, the author has to be inserted as `#kopp# #et# #kubovy#` or `#kopp# and #kubovy#`.
 
+## Rendering of constants in JabRef's entry editor
+
+Strings are rendered specially in the entry editor.
+This is especially important in the case of months.
+For instance, take the following BibTeX entry:
+
+```bibtex
+@Misc{m3,
+  month = may,
+}
+```
+
+In JabRef, the entry editor then displays `#may#`.
+In case the entry editor just displays `may`, this is written as follows:
+
+```bibtex
+@Misc{m4,
+  month = {may},
+}
+```
+
+In other words: The character `#` indicates something special in the entry editor.
+
+## JabRef's typed Strings
+
 JabRef enhances the concept of Strings to add a type to those `@String`s.
 The issue is how to preserve such type of a string in a BibTeX file.
 JabRef adds the type though prefixes:
@@ -33,4 +75,6 @@ It can also happen that you will have the same institution for more types:
 
 Even if the last example may appear contradicting the intention was to remove duplicity and unify the names of persons and institutions.
 
+## Further reading
+
 See <https://tex.stackexchange.com/questions/303467/bibliography-contents-journal-names-not-abbreviated-even-with-ieeeabrv/303489#303489> for a MWE for string constants.