cleanup
diff --git a/README-SECURITY-MODEL.md b/README-SECURITY-MODEL.md
index 0af4d6c..0e60203 100644
--- a/README-SECURITY-MODEL.md
+++ b/README-SECURITY-MODEL.md
@@ -86,16 +86,16 @@
For example, the following top-down contains an RBAC role hierarchy for a fictional software development organization:
```
- *CTO*
- |
- | |
- *ENG* *QC*
- | | | |
- *E1* *E2* *Q1* *Q2*
- | |
- *DA* *QA*
+ CTO
|
- *A*
+ | |
+ ENG QC
+ | | | |
+ E1 E2 Q1 Q2
+ | |
+ DA QA
+ |
+ A
```
Where a role called *CTO* is the highest ascendant in the graph, and *A* is the lowest descendant. In a top-down role hierarchy, privilege increases as we descend downward. So a person with role *A* inherits all that are above.
