Update README.md

Geography/README.md

@@ -2,7 +2,7 @@
 
 Adding these two YMLs will create collections for a seven continent configuration (as opposed to the six UN regions used by the default continent.yml) and a version of the countries.yml which groups countries with low output that are culturally similar - such as 'Balkans', 'Nordic', 'Middle East' and 'Pacific Island'.
 
-The entry overlay file adds a country flag defined by the audio language of the entry. So Mayan gets a Mexican flag, and English gets an English flag for instance.
+The entry overlay file adds a country flag defined by the audio language of the entry to the top right corner. So Mayan gets a Mexican flag, and English gets an English flag for instance. This is inexact, as languages are not countries. Spanish is great for films from Spain; but a Portuguese flag on a Brazilean film could be confusing. Furthermore, many films have an unknown or multiple audio languages - this needs to be fixed at the file levelv however with a tool such as mkvtoolnix.
 
 ```yaml
 libraries:
@@ -11,23 +11,22 @@ libraries:
     - git: Geography/Movies/continents.yml
       template_variables:
         style:color  # default. Can change to white
-          collection_section: "078"
     - git: Geography/Movies/regions.yml
       template_variables:
         style:color  # default. Can change to white
-          collection_section: "079"
   TV Shows:
     metadata_path:
     - git: Geography/TV/continents.yml
       template_variables:
         style:color  # default. Can change to white
-          collection_section: "078"
     - git: Geography/TV/regions.yml
       template_variables:
         style:color  # default. Can change to white
-          collection_section: "079"
-     
+overlays:
+    metadata_path:
+    - git: Geography/overlays.yml
 ```
+
 **Continents Collection Overview**: <br><br>
 ![Movies](https://i.imgur.com/WdZSatA.png)
 <br>