diff --git a/base/src/main/java/de/staropensource/engine/base/logging/Logger.java b/base/src/main/java/de/staropensource/engine/base/logging/Logger.java
index c583447..bd6f0bd 100644
--- a/base/src/main/java/de/staropensource/engine/base/logging/Logger.java
+++ b/base/src/main/java/de/staropensource/engine/base/logging/Logger.java
@@ -137,6 +137,8 @@ public final class Logger {
     /**
      * Redirects regular log messages.
      *
+     * @param level   level of the log call
+     * @param message message
      * @since v1-alpha8
      */
     public static void redirectCall(@NotNull LogLevel level, @NotNull String message) {
@@ -146,6 +148,9 @@ public final class Logger {
     /**
      * Redirects crash calls.
      *
+     * @param message   message
+     * @param throwable {@link Throwable} which caused the error
+     * @param fatal     if to terminate the engine
      * @since v1-alpha8
      */
     public static void redirectCall(@NotNull String message, @Nullable Throwable throwable, boolean fatal) {
diff --git a/base/src/main/java/de/staropensource/engine/base/logging/backend/CrashHandler.java b/base/src/main/java/de/staropensource/engine/base/logging/backend/CrashHandler.java
index 942cc7f..4ef5989 100644
--- a/base/src/main/java/de/staropensource/engine/base/logging/backend/CrashHandler.java
+++ b/base/src/main/java/de/staropensource/engine/base/logging/backend/CrashHandler.java
@@ -57,6 +57,13 @@ public final class CrashHandler {
             "$ git blame",
     };
 
+    /**
+     * Creates and initializes an instance of this class.
+     *
+     * @since v1-alpha8
+     */
+    private CrashHandler() {}
+
     /**
      * Handles crash reports.
      *
diff --git a/base/src/main/java/de/staropensource/engine/base/type/EngineState.java b/base/src/main/java/de/staropensource/engine/base/type/EngineState.java
index 75571f2..a83d3bf 100644
--- a/base/src/main/java/de/staropensource/engine/base/type/EngineState.java
+++ b/base/src/main/java/de/staropensource/engine/base/type/EngineState.java
@@ -19,8 +19,6 @@
 
 package de.staropensource.engine.base.type;
 
-import de.staropensource.engine.base.logging.Logger;
-
 /**
  * Determines in which state the engine is currently in.
  *
@@ -28,58 +26,52 @@ import de.staropensource.engine.base.logging.Logger;
  */
 public enum EngineState {
     /**
-     * The state of the engine is currently unknown.
-     * The engine likely has not been initialized yet.
+     * Indicates that the state of the engine is
+     * currently unknown. The engine is most likely
+     * not initialized yet.
      *
      * @since v1-alpha2
      */
     UNKNOWN,
 
     /**
-     * The engine is in early startup.
-     * The engine is largely uninitialized and
-     * the logging infrastructure is not yet ready
-     * to be used.
-     * <p>
-     * This state is used to indicate that the
-     * {@link InitLogger} shall be used instead
-     * of {@link Logger}.
+     * Indicates that the engine is largely
+     * uninitialized and unsafe to use.
      *
-     * @since v1-alpha4
+     * @since v1-alpha8
      */
     EARLY_STARTUP,
 
     /**
-     * The engine is starting up.
-     * Some parts of the engine may not be initialized
-     * yet and may be unsafe to access. The logging
-     * infrastructure is ready to be used though and is
-     * safe to access.
+     * Indicates that the core engine has fully
+     * initialized, except for all subsystems.
      *
-     * @since v1-alpha2
+     * @since v1-alpha8
      */
     STARTUP,
 
     /**
-     * The engine is in normal operation mode.
+     * Indicates that the engine is running
+     * and operating normally.
      *
      * @since v1-alpha2
      */
     RUNNING,
 
     /**
-     * The engine has crashed, either by itself or the application.
+     * Indicates that the engine or the
+     * application has crashed.
      *
      * @since v1-alpha2
      */
     CRASHED,
 
     /**
-     * The engine is shutting down.
-     * Some parts of the engine may have already
-     * shut down and may be unsafe to access.
+     * Indicates that the engine is shutting
+     * down. The engine is unusable in this
+     * state and should not be used.
      *
-     * @since v1-alpha2
+     * @since v1-alpha8
      */
     SHUTDOWN,
 }
diff --git a/base/src/test/java/de/staropensource/engine/base/srctests/EngineConfigurationTest.java b/base/src/test/java/de/staropensource/engine/base/srctests/EngineConfigurationTest.java
index 5599d62..8fd6d36 100644
--- a/base/src/test/java/de/staropensource/engine/base/srctests/EngineConfigurationTest.java
+++ b/base/src/test/java/de/staropensource/engine/base/srctests/EngineConfigurationTest.java
@@ -29,6 +29,7 @@ import org.junit.jupiter.api.Test;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Properties;
+import java.util.Set;
 
 import static org.junit.jupiter.api.Assertions.*;
 
@@ -53,11 +54,10 @@ class EngineConfigurationTest extends TestBase {
         settings.put("debug", new Object[]{ "true", Boolean.TRUE });
         settings.put("debugEvents", new Object[]{ "true", Boolean.TRUE });
         settings.put("errorShortcodeParser", new Object[]{ "false", Boolean.FALSE });
-        settings.put("loggerLevel", new Object[]{ "verbose", LogLevel.VERBOSE });
-        settings.put("loggerTemplate", new Object[]{ "%log_path% says: %message%", "%log_path% says: %message%" });
-        settings.put("loggerImmediateShutdown", new Object[]{ "true", Boolean.TRUE });
-        settings.put("loggerForceStandardOutput", new Object[]{ "true", Boolean.TRUE });
-        settings.put("loggerPollingSpeed", new Object[]{ "9999", 9999 });
+        settings.put("logLevel", new Object[]{ "verbose", LogLevel.VERBOSE });
+        settings.put("logFeatures", new Object[]{ "formatting,runtime,time", Set.of("formatting", "runtime", "time") });
+        settings.put("logForceStandardOutput", new Object[]{ "true", Boolean.TRUE });
+        settings.put("logPollingSpeed", new Object[]{ "9999", 9999 });
         settings.put("optimizeLogging", new Object[]{ "false", Boolean.FALSE });
         settings.put("optimizeEvents", new Object[]{ "false", Boolean.FALSE });
 
diff --git a/notification/src/main/java/de/staropensource/engine/notification/NotificationSubsystem.java b/notification/src/main/java/de/staropensource/engine/notification/NotificationSubsystem.java
index 7340540..b2558ff 100644
--- a/notification/src/main/java/de/staropensource/engine/notification/NotificationSubsystem.java
+++ b/notification/src/main/java/de/staropensource/engine/notification/NotificationSubsystem.java
@@ -22,6 +22,7 @@ package de.staropensource.engine.notification;
 import de.staropensource.engine.base.annotation.EngineSubsystem;
 import de.staropensource.engine.base.implementable.SubsystemClass;
 import de.staropensource.engine.base.implementation.versioning.StarOpenSourceVersioningSystem;
+import de.staropensource.engine.base.logging.Logger;
 import de.staropensource.engine.base.type.DependencyVector;
 import de.staropensource.engine.base.utility.information.EngineInformation;
 import lombok.Getter;