diff --git a/app/src/main/java/info/nightscout/androidaps/events/Event.java b/app/src/main/java/info/nightscout/androidaps/events/Event.java
index 1bbbf8971a..77d1215362 100644
--- a/app/src/main/java/info/nightscout/androidaps/events/Event.java
+++ b/app/src/main/java/info/nightscout/androidaps/events/Event.java
@@ -2,6 +2,7 @@ package info.nightscout.androidaps.events;
 
 import org.apache.commons.lang3.builder.ReflectionToStringBuilder;
 
+/** Base class for all events posted on the event bus. */
 public abstract class Event {
     @Override
     public String toString() {
diff --git a/app/src/main/java/info/nightscout/androidaps/events/EventLoop.java b/app/src/main/java/info/nightscout/androidaps/events/EventLoop.java
new file mode 100644
index 0000000000..d694d52537
--- /dev/null
+++ b/app/src/main/java/info/nightscout/androidaps/events/EventLoop.java
@@ -0,0 +1,5 @@
+package info.nightscout.androidaps.events;
+
+/** Supeclass for all events concerned with input or output into or from the LoopPlugin. */
+public abstract class EventLoop extends Event {
+}
diff --git a/app/src/main/java/info/nightscout/androidaps/events/EventNewBG.java b/app/src/main/java/info/nightscout/androidaps/events/EventNewBG.java
index eb304a81b2..2fb9919b00 100644
--- a/app/src/main/java/info/nightscout/androidaps/events/EventNewBG.java
+++ b/app/src/main/java/info/nightscout/androidaps/events/EventNewBG.java
@@ -3,5 +3,5 @@ package info.nightscout.androidaps.events;
 /**
  * Created by mike on 05.06.2016.
  */
-public class EventNewBG extends Event {
+public class EventNewBG extends EventLoop {
 }
diff --git a/app/src/main/java/info/nightscout/androidaps/events/EventTempBasalChange.java b/app/src/main/java/info/nightscout/androidaps/events/EventTempBasalChange.java
index 8efd1d46e2..73660bb00e 100644
--- a/app/src/main/java/info/nightscout/androidaps/events/EventTempBasalChange.java
+++ b/app/src/main/java/info/nightscout/androidaps/events/EventTempBasalChange.java
@@ -3,5 +3,5 @@ package info.nightscout.androidaps.events;
 /**
  * Created by mike on 05.06.2016.
  */
-public class EventTempBasalChange extends Event {
+public class EventTempBasalChange extends EventLoop {
 }
diff --git a/app/src/main/java/info/nightscout/androidaps/events/EventTreatmentChange.java b/app/src/main/java/info/nightscout/androidaps/events/EventTreatmentChange.java
index dd5eb519e3..439d9a7124 100644
--- a/app/src/main/java/info/nightscout/androidaps/events/EventTreatmentChange.java
+++ b/app/src/main/java/info/nightscout/androidaps/events/EventTreatmentChange.java
@@ -3,5 +3,5 @@ package info.nightscout.androidaps.events;
 /**
  * Created by mike on 04.06.2016.
  */
-public class EventTreatmentChange extends Event {
+public class EventTreatmentChange extends EventLoop {
 }
diff --git a/app/src/main/java/info/nightscout/androidaps/events/EventUpdateGui.java b/app/src/main/java/info/nightscout/androidaps/events/EventUpdateGui.java
index 5edb7b7a9a..3471d2e851 100644
--- a/app/src/main/java/info/nightscout/androidaps/events/EventUpdateGui.java
+++ b/app/src/main/java/info/nightscout/androidaps/events/EventUpdateGui.java
@@ -1,4 +1,5 @@
 package info.nightscout.androidaps.events;
 
+/** Base class for events to update the UI, mostly a specific tab. */
 public abstract class EventUpdateGui extends Event {
 }
diff --git a/app/src/main/java/info/nightscout/androidaps/plugins/IobCobCalculator/events/EventAutosensCalculationFinished.java b/app/src/main/java/info/nightscout/androidaps/plugins/IobCobCalculator/events/EventAutosensCalculationFinished.java
index c94021e185..ea73915436 100644
--- a/app/src/main/java/info/nightscout/androidaps/plugins/IobCobCalculator/events/EventAutosensCalculationFinished.java
+++ b/app/src/main/java/info/nightscout/androidaps/plugins/IobCobCalculator/events/EventAutosensCalculationFinished.java
@@ -1,10 +1,10 @@
 package info.nightscout.androidaps.plugins.IobCobCalculator.events;
 
-import info.nightscout.androidaps.events.Event;
+import info.nightscout.androidaps.events.EventLoop;
 
 /**
  * Created by mike on 30.04.2017.
  */
 
-public class EventAutosensCalculationFinished extends Event {
+public class EventAutosensCalculationFinished extends EventLoop {
 }