add a caption to explain the meaning of blue and red blocks in the diagram
@@ -23,6 +23,8 @@ The diagram below shows the typical architecture for a mission running KubOS:
:align: center
:alt: block diagram depicting the software of a typical kubos-powered mission
+ The software powering a typical kubos-based mission with components provided by KubOS in blue and components that need to be implemented for the specific mission payload in red.
+
Each of the boxes are independent processes, or *microservices*.
For example, we can revise the communication service to support a new radio, and the binaries of *all other services* are unchanged.
This can be useful between missions, to truly maintain flight heritage on the components that need no revisions,
