diff --git a/client/src/main/java/envoy/client/data/commands/InterruptingSystemCommand.java b/client/src/main/java/envoy/client/data/commands/InterruptingSystemCommand.java
new file mode 100644
index 0000000..90434c4
--- /dev/null
+++ b/client/src/main/java/envoy/client/data/commands/InterruptingSystemCommand.java
@@ -0,0 +1,52 @@
+package envoy.client.data.commands;
+
+import java.util.function.Function;
+import java.util.function.Supplier;
+
+import envoy.client.event.InterruptEvent;
+import envoy.event.EventBus;
+
+/**
+ * This is a Envoy-specific subclass that allows
+ *
+ * Project: <strong>envoy-client</strong><br>
+ * File: <strong>InterruptingSystemCommand.java</strong><br>
+ * Created: <strong>23.07.2020</strong><br>
+ *
+ * @author Leon Hofmeister
+ * @since Envoy Client v0.2-beta
+ */
+public class InterruptingSystemCommand extends SystemCommand {
+
+	private static final EventBus eventBus = EventBus.getInstance();
+
+	/**
+	 * The reason why an {@link InterruptEvent} will be dispatched from this class.
+	 */
+	public static final String interruptionReason = "command executed";
+
+	/**
+	 * Constructs a new {@code SystemCommand}.
+	 *
+	 * @param action            the action that should be performed
+	 * @param numberOfArguments the amount of arguments that need to be parsed for
+	 *                          the underlying function
+	 * @param description       the description of this {@code SystemCommand}
+	 * @since Envoy Client v0.2-beta
+	 */
+	public InterruptingSystemCommand(Function<String[], Void> action, int numberOfArguments, String description) {
+		super(action, numberOfArguments, description);
+	}
+
+	@Override
+	public void onCall() {
+		super.onCall();
+		eventBus.dispatch(new InterruptEvent(interruptionReason));
+	}
+
+	@Override
+	public void onCall(Supplier<Void> consumer) {
+		super.onCall(consumer);
+		eventBus.dispatch(new InterruptEvent(interruptionReason));
+	}
+}
diff --git a/client/src/main/java/envoy/client/data/commands/OnCall.java b/client/src/main/java/envoy/client/data/commands/OnCall.java
new file mode 100644
index 0000000..3dbc18e
--- /dev/null
+++ b/client/src/main/java/envoy/client/data/commands/OnCall.java
@@ -0,0 +1,37 @@
+package envoy.client.data.commands;
+
+import java.util.function.Supplier;
+
+/**
+ * This interface defines an action that should be performed when a system
+ * command gets called.
+ * <p>
+ * Project: <strong>envoy-client</strong><br>
+ * File: <strong>OnCall.java</strong><br>
+ * Created: <strong>23.07.2020</strong><br>
+ *
+ * @author Leon Hofmeister
+ * @since Envoy Client v0.2-beta
+ */
+public interface OnCall {
+
+	/**
+	 * Performs class specific actions when a {@link SystemCommand} has been called.
+	 *
+	 * The action that should be performed when this {@link SystemCommand} has been
+	 * called.
+	 *
+	 * @since Envoy Client v0.2-beta
+	 */
+	void onCall();
+
+	/**
+	 * Performs actions that can only be performed by classes that are not
+	 * {@link SystemCommand}s when a SystemCommand has been called.
+	 *
+	 * @param consumer the action to perform when this {@link SystemCommand} has
+	 *                 been called
+	 * @since Envoy Client v0.2-beta
+	 */
+	void onCall(Supplier<Void> consumer);
+}
diff --git a/client/src/main/java/envoy/client/data/commands/SystemCommand.java b/client/src/main/java/envoy/client/data/commands/SystemCommand.java
index 9a3eecd..f0b6a29 100644
--- a/client/src/main/java/envoy/client/data/commands/SystemCommand.java
+++ b/client/src/main/java/envoy/client/data/commands/SystemCommand.java
@@ -1,6 +1,7 @@
 package envoy.client.data.commands;
 
 import java.util.function.Function;
+import java.util.function.Supplier;
 
 /**
  * This class is the base class of all {@code SystemCommands} and contains an
@@ -20,7 +21,7 @@ import java.util.function.Function;
  * @author Leon Hofmeister
  * @since Envoy Client v0.2-beta
  */
-public final class SystemCommand {
+public class SystemCommand implements OnCall {
 
 	/**
 	 * This variable stores the amount of arguments that need to be parsed for the
@@ -39,8 +40,10 @@ public final class SystemCommand {
 
 	protected final String description;
 
+	protected int relevance = 0;
+
 	/**
-	 * Constructs a new {@code NoArgSystemCommand} that takes no arguments.
+	 * Constructs a new {@code SystemCommand}.
 	 *
 	 * @param action            the action that should be performed
 	 * @param numberOfArguments the amount of arguments that need to be parsed for
@@ -72,4 +75,25 @@ public final class SystemCommand {
 	 * @since Envoy Client v0.2-beta
 	 */
 	public String getDescription() { return description; }
+
+	/**
+	 * @return the relevance
+	 * @since Envoy Client v0.2-beta
+	 */
+	public int getRelevance() { return relevance; }
+
+	/**
+	 * @param relevance the relevance to set
+	 * @since Envoy Client v0.2-beta
+	 */
+	public void setRelevance(int relevance) { this.relevance = relevance; }
+
+	@Override
+	public void onCall() { relevance++; }
+
+	@Override
+	public void onCall(Supplier<Void> consumer) {
+		onCall();
+		consumer.get();
+	}
 }
diff --git a/client/src/main/java/envoy/client/data/commands/SystemCommandsMap.java b/client/src/main/java/envoy/client/data/commands/SystemCommandsMap.java
index 2eb45f2..a9c6c84 100644
--- a/client/src/main/java/envoy/client/data/commands/SystemCommandsMap.java
+++ b/client/src/main/java/envoy/client/data/commands/SystemCommandsMap.java
@@ -265,6 +265,7 @@ public class SystemCommandsMap {
 			try {
 				systemCommand.getAction().apply(arguments);
 				commandExecuted = true;
+				systemCommand.onCall();
 			} catch (final Exception e) {
 				logger.log(Level.WARNING, "The system command " + getCommand(input) + " threw an exception: ", e);
 			}
diff --git a/client/src/main/java/envoy/client/event/InterruptEvent.java b/client/src/main/java/envoy/client/event/InterruptEvent.java
new file mode 100644
index 0000000..7676267
--- /dev/null
+++ b/client/src/main/java/envoy/client/event/InterruptEvent.java
@@ -0,0 +1,28 @@
+package envoy.client.event;
+
+import envoy.event.Event;
+
+/**
+ * This event serves the purpose of interrupting something so that it will not
+ * be finished.
+ * <p>
+ * Project: <strong>envoy-client</strong><br>
+ * File: <strong>InterruptEvent.java</strong><br>
+ * Created: <strong>23.07.2020</strong><br>
+ *
+ * @author Leon Hofmeister
+ * @since Envoy Client v0.2-beta
+ */
+public class InterruptEvent extends Event<String> {
+
+	private static final long serialVersionUID = 1L;
+
+	/**
+	 * Creates a new {@link InterruptEvent}.
+	 *
+	 * @param reason the reason why this event exists -> allows finer sieving
+	 * @since Envoy Client v0.2-beta
+	 */
+	public InterruptEvent(String reason) { super(reason); }
+
+}