diff --git a/docs/unsure-where-to-put/adr_star_activity.md b/docs/unsure-where-to-put/adr_star_activity.md
index 07af33ea8e..4b8954eb90 100644
--- a/docs/unsure-where-to-put/adr_star_activity.md
+++ b/docs/unsure-where-to-put/adr_star_activity.md
@@ -21,11 +21,15 @@
 
 This way of expressing stars will have the following features:
 
-1. !ctor & object may be dereferenced by (ap-)api
+1. Actor & object may be dereferenced by (ap-)api
 2. The activity can be referenced itself (e.g. in order to express a result of the triggered action)
 3. Star is a special case of a Like. Star only happens in ForgeFed context. Different things should be named differnt ...
 4. With the `source` given it would be more easy to distinguish the uri layout for object and actor id's and make implementation more straight forward
+   1. The `source` field reflects the software sending an activity. Values of may be forgejo, gitlab, ...
+   2. Knowing the sending system will it make easier to interact with:
+      1. We know exactly how the actor can be derefernced (see: https://codeberg.org/meissa/forgejo/src/commit/7cac9806f8247963b1cdce3f2c5f5d1bc3763fbe/models/forgefed/actor.go#L121) 
+      2. We know how we can validate the given references (see: https://codeberg.org/meissa/forgejo/src/commit/7cac9806f8247963b1cdce3f2c5f5d1bc3763fbe/routers/api/v1/activitypub/repository.go#L180)
 
 See also:
-1. spec in clojure: https://repo.prod.meissa.de/meissa/activity-pub-poc/src/branch/forgefed_star/src/test/cljc/org/domaindrivenarchitecture/fed_poc/forgefed_test.cljc#L36-L41
+1. [spec in clojure]: https://repo.prod.meissa.de/meissa/activity-pub-poc/src/branch/forgefed_star/src/test/cljc/org/domaindrivenarchitecture/fed_poc/forgefed_test.cljc#L36-L41