diff --git a/code/services-core/control-service/readme.md b/code/services-core/control-service/readme.md
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--- a/code/services-core/control-service/readme.md
+++ b/code/services-core/control-service/readme.md
@@ -1,7 +1,16 @@
 # Control Service
 
-The control service provides an operator's user interface, and is responsible for orchestrating the various processes of the system. 
+The control service provides an operator's user interface, and is responsible for orchestrating the various 
+processes of the system using Actors. 
 
+Actors within the control service will spawn processes when necessary, by 
+monitoring their message queue inboxes.
+
+## Central Classes
+
+* [ControlService](src/main/java/nu/marginalia/control/ControlService.java)
+* [ControlActors](src/main/java/nu/marginalia/control/actor/ControlActors.java) - Class responsible for Actors' lifecycle
+* [ProcessService](src/main/java/nu/marginalia/control/process/ProcessService.java) - Class responsible for spawning Processes
 
 ## See Also