diff --git a/Doc/Makefile.in b/Doc/Makefile.in
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--- a/Doc/Makefile.in
+++ b/Doc/Makefile.in
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-SCRIPTBASENAME=lectures
+SCRIPTBASENAME=incubator
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+       style="display:inline;fill:#ff00ff;stroke:none;stroke-width:0.43975097;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:4.23333311px;line-height:1.25;font-family:'DejaVu Sans Mono';-inkscape-font-specification:'DejaVu Sans Mono';letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458332"
+       x="85.989571"
+       y="2.7929897"
+       id="text4328"><tspan
+         sodipodi:role="line"
+         id="tspan4326"
+         x="85.989571"
+         y="2.7929897"
+         style="stroke-width:0.26458332">r</tspan></text>
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.5291667;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker-start:url(#marker14195);marker-end:url(#marker6297)"
+       d="m 91.281237,1.4700727 c 9.432063,-0.81221483 22.956423,-0.73189931 30.634753,3.804154 9.92499,5.8632843 10.37567,10.7479293 20.959,13.3937633"
+       id="path4330"
+       inkscape:connector-curvature="0"
+       sodipodi:nodetypes="csc" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:4.23333311px;line-height:1.25;font-family:'DejaVu Sans';-inkscape-font-specification:'DejaVu Sans';letter-spacing:0px;word-spacing:0px;display:inline;fill:#ff0000;fill-opacity:1;stroke:none;stroke-width:0.26458332"
+       x="75.168526"
+       y="35.113499"
+       id="text15130-7"><tspan
+         sodipodi:role="line"
+         id="tspan15128-5"
+         x="75.168526"
+         y="35.113499"
+         style="fill:#ff0000;stroke-width:0.26458332">Create second variable holding a copy of</tspan><tspan
+         sodipodi:role="line"
+         x="75.168526"
+         y="40.405167"
+         style="fill:#ff0000;stroke-width:0.26458332"
+         id="tspan15202">variable r's heap reference: Both variables</tspan><tspan
+         sodipodi:role="line"
+         x="75.168526"
+         y="45.696831"
+         style="fill:#ff0000;stroke-width:0.26458332"
+         id="tspan15204">r and s point to the common <tspan
+   style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-family:'DejaVu Sans Mono';-inkscape-font-specification:'DejaVu Sans Mono'"
+   id="tspan15214">StringBuffer</tspan></tspan><tspan
+         sodipodi:role="line"
+         x="75.168526"
+         y="50.988499"
+         style="fill:#ff0000;stroke-width:0.26458332"
+         id="tspan15206">instance.</tspan></text>
+  </g>
+  <g
+     transform="translate(-1.4239073,11.675749)"
+     style="display:none"
+     inkscape:label="Layer 2"
+     id="g6143"
+     inkscape:groupmode="layer">
+    <rect
+       style="fill:#00ff00;stroke:none;stroke-width:0.68938458;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+       id="rect6127"
+       width="23.812498"
+       height="21.704384"
+       x="144.19791"
+       y="-2.498677" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:4.23333311px;line-height:1.25;font-family:'DejaVu Sans Mono';-inkscape-font-specification:'DejaVu Sans Mono';letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458332"
+       x="146.61842"
+       y="1.9103559"
+       id="text6131"><tspan
+         sodipodi:role="line"
+         id="tspan6129"
+         x="146.61842"
+         y="1.9103559"
+         style="stroke-width:0.26458332">Joe</tspan></text>
+    <rect
+       style="display:inline;fill:#ff00ff;stroke:none;stroke-width:0.43975097;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+       id="rect6133"
+       width="35.718746"
+       height="5.887713"
+       x="2.6458254"
+       y="0.14715621" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:4.23333311px;line-height:1.25;font-family:'DejaVu Sans';-inkscape-font-specification:'DejaVu Sans';letter-spacing:0px;word-spacing:0px;display:inline;fill:#ff0000;fill-opacity:1;stroke:none;stroke-width:0.26458332"
+       x="75.168526"
+       y="35.113499"
+       id="text15130-9"><tspan
+         sodipodi:role="line"
+         id="tspan15128-8"
+         x="75.168526"
+         y="35.113499"
+         style="fill:#ff0000;stroke-width:0.26458332">Assign heap reference to stack variable r.</tspan></text>
+  </g>
+  <g
+     transform="translate(-1.4239073,11.675749)"
+     style="display:none"
+     inkscape:label="Layer 1"
+     id="g5062"
+     inkscape:groupmode="layer">
+    <rect
+       style="display:inline;fill:#00ff00;stroke:none;stroke-width:0.58633465;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+       id="rect2394-1"
+       width="63.5"
+       height="5.887713"
+       x="6.614573"
+       y="5.4388232" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:4.23333311px;line-height:1.25;font-family:'DejaVu Sans';-inkscape-font-specification:'DejaVu Sans';letter-spacing:0px;word-spacing:0px;fill:#ff0000;fill-opacity:1;stroke:none;stroke-width:0.26458332"
+       x="75.168526"
+       y="34.98534"
+       id="text15130"><tspan
+         sodipodi:role="line"
+         id="tspan15128"
+         x="75.168526"
+         y="34.98534"
+         style="fill:#ff0000;stroke-width:0.26458332">Create <tspan
+   style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-family:'DejaVu Sans Mono';-inkscape-font-specification:'DejaVu Sans Mono'"
+   id="tspan15216">StringBuffer</tspan> instance on heap.</tspan></text>
+  </g>
+  <g
+     ns1:masterSlide="masterSlide"
+     transform="translate(-14.010514,-21.232287)"
+     inkscape:label="Master"
+     inkscape:groupmode="layer"
+     id="layer1"
+     style="display:inline"
+     sodipodi:insensitive="true">
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:4.23333311px;line-height:1.25;font-family:'DejaVu Sans Mono';-inkscape-font-specification:'DejaVu Sans Mono';letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458332"
+       x="160.75327"
+       y="74.065605"
+       id="text2361"><tspan
+         sodipodi:role="line"
+         id="tspan2359"
+         x="160.75327"
+         y="77.811111"
+         style="stroke-width:0.26458332" /></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:4.23333311px;line-height:1.25;font-family:'DejaVu Sans Mono';-inkscape-font-specification:'DejaVu Sans Mono';letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458332"
+       x="15.23243"
+       y="37.594448"
+       id="text4246"><tspan
+         sodipodi:role="line"
+         id="tspan4244"
+         x="15.23243"
+         y="37.594448"
+         style="stroke-width:0.26458332">StringBuffer r = </tspan><tspan
+         sodipodi:role="line"
+         x="15.23243"
+         y="42.886116"
+         style="stroke-width:0.26458332"
+         id="tspan4256">  new StringBuffer(&quot;Joe&quot;);</tspan><tspan
+         sodipodi:role="line"
+         x="15.23243"
+         y="48.17778"
+         style="stroke-width:0.26458332"
+         id="tspan4248"></tspan><tspan
+         sodipodi:role="line"
+         x="15.23243"
+         y="53.469448"
+         style="stroke-width:0.26458332"
+         id="tspan4264">StringBuffer s = r;</tspan><tspan
+         sodipodi:role="line"
+         x="15.23243"
+         y="58.761112"
+         style="stroke-width:0.26458332"
+         id="tspan4250"></tspan><tspan
+         sodipodi:role="line"
+         x="15.23243"
+         y="64.05278"
+         style="stroke-width:0.26458332"
+         id="tspan4266">r.append(&quot;<tspan
+   style="fill:#ff0000"
+   id="tspan15118"> Simpson</tspan>&quot;);</tspan><tspan
+         sodipodi:role="line"
+         x="15.23243"
+         y="69.344444"
+         style="stroke-width:0.26458332"
+         id="tspan4252"></tspan><tspan
+         sodipodi:role="line"
+         x="15.23243"
+         y="74.636116"
+         style="stroke-width:0.26458332"
+         id="tspan4254">System.out.println(&quot;r=&quot;+r);</tspan><tspan
+         sodipodi:role="line"
+         x="15.23243"
+         y="79.92778"
+         style="stroke-width:0.26458332"
+         id="tspan15222">System.out.println(&quot;s=&quot;+s);</tspan><tspan
+         sodipodi:role="line"
+         x="15.23243"
+         y="85.219444"
+         style="stroke-width:0.26458332"
+         id="tspan4268" /></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:4.23333311px;line-height:1.25;font-family:'DejaVu Sans Mono';-inkscape-font-specification:'DejaVu Sans Mono';letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458332"
+       x="84.024094"
+       y="31.732275"
+       id="text4260"><tspan
+         sodipodi:role="line"
+         id="tspan4258"
+         x="84.024094"
+         y="35.477783"
+         style="stroke-width:0.26458332"></tspan><tspan
+         sodipodi:role="line"
+         x="84.024094"
+         y="40.769447"
+         style="stroke-width:0.26458332"
+         id="tspan4262" /></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:4.23333311px;line-height:1.25;font-family:sans-serif;-inkscape-font-specification:sans-serif;letter-spacing:0px;word-spacing:0px;display:inline;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458332"
+       x="103.58879"
+       y="25.6882"
+       id="text4272"><tspan
+         sodipodi:role="line"
+         id="tspan4270"
+         x="103.58879"
+         y="25.6882"
+         style="stroke-width:0.26458332">Stack</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:4.23333311px;line-height:1.25;font-family:sans-serif;-inkscape-font-specification:sans-serif;letter-spacing:0px;word-spacing:0px;display:inline;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458332"
+       x="155.04611"
+       y="25.557976"
+       id="text4276"><tspan
+         sodipodi:role="line"
+         id="tspan4274"
+         x="155.04611"
+         y="25.557976"
+         style="stroke-width:0.26458332">Heap</tspan></text>
+  </g>
+</svg>
diff --git a/Doc/Sd1/gettingStarted.xml b/Doc/Sd1/gettingStarted.xml
index 6f4ff7e9fbfd9254089423bdf0640137e04e2824..bd5d855e9ba7765fca36a542886f60e8612b23b0 100644
--- a/Doc/Sd1/gettingStarted.xml
+++ b/Doc/Sd1/gettingStarted.xml
@@ -1618,15 +1618,15 @@ public class App {
         <mediaobject>
           <imageobjectco>
             <areaspec otherunits="imagemap" units="other">
-              <area coords="139,182,313,228"
+              <area coords="112,182,313,228"
                     linkends="sd1_fig_projectIliasNotYetSaved-1"
                     xml:id="sd1_fig_projectIliasNotYetSaved-1.2-co"/>
 
-              <area coords="7,52,57,102"
+              <area coords="1,34,57,102"
                     linkends="sd1_fig_projectIliasNotYetSaved-2"
                     xml:id="sd1_fig_projectIliasNotYetSaved-2.2-co"/>
 
-              <area coords="546,67,626,118"
+              <area coords="512,67,626,118"
                     linkends="sd1_fig_projectIliasNotYetSaved-3"
                     xml:id="sd1_fig_projectIliasNotYetSaved-3-co"/>
             </areaspec>
@@ -1645,7 +1645,7 @@ public class App {
 
           <callout arearefs="sd1_fig_projectIliasNotYetSaved-2.2-co"
                    xml:id="sd1_fig_projectIliasNotYetSaved-2">
-            <para>Hollow bullet point also indicating unanswered
+            <para>»Hollow« bullet point also indicating unanswered
             question.</para>
           </callout>
 
@@ -1691,11 +1691,11 @@ public class App {
             <td valign="top"><mediaobject>
                 <imageobjectco>
                   <areaspec otherunits="imagemap" units="other">
-                    <area coords="141,386,241,440"
+                    <area coords="114,386,241,440"
                           linkends="sd1_fig_projectIliasAnswerSaved-1"
                           xml:id="sd1_fig_projectIliasAnswerSaved-1-co"/>
 
-                    <area coords="12,254,64,311"
+                    <area coords="-1,241,65,304"
                           linkends="sd1_fig_projectIliasAnswerSaved-2"
                           xml:id="sd1_fig_projectIliasAnswerSaved-2-co"/>
                   </areaspec>