diff --git a/Development_API.md b/Development_API.md
index a636f74..7310f06 100644
--- a/Development_API.md
+++ b/Development_API.md
@@ -77,7 +77,10 @@ a.add('json://localhost/tagD/', tag="TagD")
 
 # add a tag set by set (again)
 a.add('json://localhost/tagCDE/', tag=set(["TagC", "TagD", "TagE"]))
+```
 
+Now that we've added our services and assigned them tags, this is how we can access them:
+```python
 # Expression: TagC and TagD
 # Matches the following only:
 #   - json://localhost/tagCD/
@@ -99,7 +102,19 @@ a.notify(title="my title", body="my body", tag=[('TagY', 'TagZ'), 'TagA'])
 #   - json://localhost/tagAB/
 #   - json://localhost/tagB/
 a.notify(title="my title", body="my body", tag=[('TagE', 'TagD'), 'TagB'])
+
+# Expression: None
+# Matches every single service.
+a.notify(title="my title", body="my body")
 ```
+You could look at the apprise.notify() logic like this:
+
+|tag= line                  | Tag Representation       |
+| ------------------------- | ------------------------ |
+| "TagA, TagB"              |  TagA **or** TagB
+| ['TagA', 'TagB']          |  TagA **or** TagB
+| [('TagA', 'TagC'), 'TagB']|  (TagA **and** TagC) **or** TtagB
+| [('TagB', 'TagC')]        |  TagB **and** TagC
 
 By default, all notifications are sent as type **NotifyType.INFO** using the _default_ theme. The following other types are included with this theme: