diff --git a/Doc/Sd1/objectsClasses.xml b/Doc/Sd1/objectsClasses.xml
index e70dfb4a9e046fa572c099f6179e3d5beaacfc14..a46a923f9cfaade4eb1bc0c267f4f66a04f70717 100644
--- a/Doc/Sd1/objectsClasses.xml
+++ b/Doc/Sd1/objectsClasses.xml
@@ -4467,10 +4467,11 @@ public Timeperiod(final Timeperiod timeperiod) { ... }</programlisting>
 }</programlisting>
 
               <para>This solution provides the desired result. However if
-              being called repeatedly it causes a performance penalty. We thus
-              refine it by a lazy initialization mechanism. In the first step
-              we simply rename our method having just <code
-              language="java">private</code> one:</para>
+              being called repeatedly it causes a performance penalty
+              recalculating an identical value time and again. We thus refine
+              it by using a lazy initialization mechanism. In the first step
+              we rename our current method implementation having just <code
+              language="java">private</code> access:</para>
 
               <programlisting language="java">private String toStringImplement() {
    final int largestNonZeroComponent;
@@ -4489,7 +4490,7 @@ public Timeperiod(final Timeperiod timeperiod) { ... }</programlisting>
 
               <programlisting language="java">public class Timeperiod {
 
-    // Tedious calculation, will only be initialized on-demand
+    // Tedious calculation, will be be initialized on-demand only
     private String toStringValue = null;
 
              ...
diff --git a/P/Sd1/Timeperiod/src/main/java/de/hdm_stuttgart/mi/sd1/Timeperiod.java b/P/Sd1/Timeperiod/src/main/java/de/hdm_stuttgart/mi/sd1/Timeperiod.java
index 6afdb8aa45f4116ced7cd56e1adedda1ac3fcd09..b27208afdde2d20e21e2e4c6239aa6a23a035195 100644
--- a/P/Sd1/Timeperiod/src/main/java/de/hdm_stuttgart/mi/sd1/Timeperiod.java
+++ b/P/Sd1/Timeperiod/src/main/java/de/hdm_stuttgart/mi/sd1/Timeperiod.java
@@ -14,7 +14,7 @@ public class Timeperiod {
             SECONDS_PER_DAY = 24 * SECONDS_PER_HOUR,    // 86400 seconds per day
             SECONDS_PER_WEEK = 7 * SECONDS_PER_DAY;     // 604800 seconds per week
 
-    // Tedious calculation, will only be initialized on-demand
+    // Tedious calculation, will be be initialized on-demand only
     private String toStringValue = null;
 
     private String toStringImplement() {