diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 01d0e81..d55840d 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -7,21 +7,9 @@
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-      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" afterPath="$PROJECT_DIR$/.idea/workspace.xml" />
-      <change beforePath="$PROJECT_DIR$/samples/complex.txt" afterPath="" />
-      <change beforePath="$PROJECT_DIR$/samples/init.txt" afterPath="" />
-      <change beforePath="$PROJECT_DIR$/samples/math.txt" afterPath="$PROJECT_DIR$/samples/math.txt" />
-      <change beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/Evaluable.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/Evaluable.java" />
-      <change beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/Interpreter.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/Interpreter.java" />
-      <change beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/ObjectBag.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/ObjectBag.java" />
-      <change beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/Parser.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/Parser.java" />
-      <change beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/Reserved.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/Reserved.java" />
-      <change beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/Attribute.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/Attribute.java" />
-      <change beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/Command.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/Command.java" />
-      <change beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/Method.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/Method.java" />
-      <change beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/Reference.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/Reference.java" />
-      <change beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/InterpretedMethod.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/InterpretedMethod.java" />
-      <change beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/objs/ValueObject.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/objs/ValueObject.java" />
+      <change beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/AppInfo.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/AppInfo.java" />
+      <change beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/ui/Canvas.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/ui/Canvas.java" />
+      <change beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/ui/ObjectBox.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/ui/ObjectBox.java" />
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@@ -89,8 +77,8 @@
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@@ -127,7 +115,6 @@
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         <option value="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealDivideByAssign.java" />
         <option value="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealIsEqualTo.java" />
         <option value="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealIsGreaterThan.java" />
@@ -150,7 +137,6 @@
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@@ -163,7 +149,6 @@
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@@ -178,6 +163,9 @@
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         <option value="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/ObjectBag.java" />
+        <option value="$PROJECT_DIR$/src/com/devbaltasarq/pooi/ui/ObjectBox.java" />
+        <option value="$PROJECT_DIR$/src/com/devbaltasarq/pooi/ui/Canvas.java" />
+        <option value="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/AppInfo.java" />
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@@ -198,7 +186,6 @@
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@@ -223,7 +210,9 @@
       <foldersAlwaysOnTop value="true" />
     </navigator>
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+      <pane id="PackagesPane" />
       <pane id="Scope" />
+      <pane id="Scratches" />
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@@ -262,12 +251,17 @@
               <item name="core" type="462c0819:PsiDirectoryNode" />
               <item name="evaluables" type="462c0819:PsiDirectoryNode" />
             </path>
+            <path>
+              <item name="pooi" type="b2602c69:ProjectViewProjectNode" />
+              <item name="Pooi" type="462c0819:PsiDirectoryNode" />
+              <item name="src" type="462c0819:PsiDirectoryNode" />
+              <item name="pooi" type="462c0819:PsiDirectoryNode" />
+              <item name="ui" type="462c0819:PsiDirectoryNode" />
+            </path>
           </expand>
           <select />
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@@ -1056,7 +1050,8 @@
     </todo-panel>
   </component>
   <component name="ToolWindowManager">
-    <frame x="-4" y="0" width="1573" height="1050" extended-state="0" />
+    <frame x="0" y="0" width="1573" height="1050" extended-state="0" />
+    <editor active="true" />
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       <window_info id="Palette" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.32955405" sideWeight="0.5" order="0" side_tool="false" content_ui="tabs" />
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@@ -1068,9 +1063,8 @@
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+      <window_info id="Project" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.22939298" sideWeight="0.52918285" order="3" side_tool="false" content_ui="combo" />
+      <window_info id="Structure" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.22939298" sideWeight="0.47081712" order="6" side_tool="true" content_ui="tabs" />
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@@ -1091,6 +1085,7 @@
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+      <window_info id="Find" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.31629393" sideWeight="0.5" order="5" side_tool="false" content_ui="tabs" />
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@@ -1249,13 +1244,6 @@
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@@ -1289,21 +1277,10 @@
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@@ -1515,34 +1453,46 @@
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-    <entry file="file://$PROJECT_DIR$/samples/init.txt">
+    <entry file="file://$PROJECT_DIR$/samples/init.txt" />
+    <entry file="file://$PROJECT_DIR$/samples/complex.txt" />
+    <entry file="file://$PROJECT_DIR$/samples/sesion_pooi_punto.txt">
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-    <entry file="file://$PROJECT_DIR$/samples/complex.txt">
+    <entry file="file://$PROJECT_DIR$/src/com/devbaltasarq/pooi/ui/Canvas.java">
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+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="241">
+          <caret line="131" column="47" lean-forward="true" selection-start-line="131" selection-start-column="47" selection-end-line="131" selection-end-column="47" />
           <folding />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/samples/sesion_pooi_punto.txt">
+    <entry file="file://$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/AppInfo.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="-2193">
-          <caret line="0" column="0" lean-forward="false" selection-start-line="0" selection-start-column="0" selection-end-line="0" selection-end-column="0" />
+        <state relative-caret-position="204">
+          <caret line="15" column="54" lean-forward="false" selection-start-line="15" selection-start-column="54" selection-end-line="15" selection-end-column="54" />
           <folding />
         </state>
       </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/ObjectBag.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="409">
-          <caret line="590" column="17" lean-forward="false" selection-start-line="590" selection-start-column="17" selection-end-line="590" selection-end-column="17" />
+        <state relative-caret-position="239">
+          <caret line="580" column="40" lean-forward="true" selection-start-line="580" selection-start-column="40" selection-end-line="580" selection-end-column="40" />
           <folding />
         </state>
       </provider>
diff --git a/src/com/devbaltasarq/pooi/core/AppInfo.java b/src/com/devbaltasarq/pooi/core/AppInfo.java
index 0031305..cdaa846 100644
--- a/src/com/devbaltasarq/pooi/core/AppInfo.java
+++ b/src/com/devbaltasarq/pooi/core/AppInfo.java
@@ -13,7 +13,7 @@ public class AppInfo {
     public static final String Name = "Pooi";
     public static final String Email = "jbgarcia@uvigo.es";
     public static final String Author = "Baltasar García Perez-Schofield";
-    public static final String Version = "2.0 20180116";
+    public static final String Version = "2.1 20180118";
     public static final String License = "MIT License: https://opensource.org/licenses/MIT";
     public static final String SessionFileExt = ".txt";
     public static final String ScriptFileExt = ".poi";
diff --git a/src/com/devbaltasarq/pooi/ui/Canvas.java b/src/com/devbaltasarq/pooi/ui/Canvas.java
index a624987..8a1b7a2 100644
--- a/src/com/devbaltasarq/pooi/ui/Canvas.java
+++ b/src/com/devbaltasarq/pooi/ui/Canvas.java
@@ -8,6 +8,8 @@
  * Created by baltasarq on 27/04/16.
  */
 public class Canvas extends JPanel {
+    public static final boolean BOLD = true;
+
     /** Creates a new canvas with the specified dimensions
      * @param width The width of the drawing area.
      * @param height The height of the drawing area.
@@ -139,11 +141,27 @@ public void circle(int x, int y, int r, boolean filled)
      * @param str the vector of chars containing the string.
      */
     public void print(int x, int y, String str)
+    {
+        print( x, y, str, false );
+    }
+
+    /**
+     * Draws a string in the graphic window
+     * @param x the x coordinate of the starting point
+     * @param y the y coordinate of the starting point
+     * @param str the vector of chars containing the string.
+     */
+    public void print(int x, int y, String str, boolean isBold)
     {
         if ( str != null ) {
             final Graphics grfs = canvas.getGraphics();
+            Font font = this.getFont();
+
+            if ( isBold ) {
+                font = font.deriveFont( Font.BOLD );
+            }
 
-            grfs.setFont( this.getFont() );
+            grfs.setFont( font );
             grfs.setColor( this.getColor() );
             grfs.drawChars( str.toCharArray(), 0, str.length(), x, y );
         }
diff --git a/src/com/devbaltasarq/pooi/ui/ObjectBox.java b/src/com/devbaltasarq/pooi/ui/ObjectBox.java
index d1cb95b..b055ba7 100644
--- a/src/com/devbaltasarq/pooi/ui/ObjectBox.java
+++ b/src/com/devbaltasarq/pooi/ui/ObjectBox.java
@@ -139,7 +139,7 @@ public void draw(Canvas canvas, int x, int y)
         canvas.setColor( Color.blue );
 
         // Name
-        canvas.print( posX, posY, this.infoLines[ 0 ] );
+        canvas.print( posX, posY, this.infoLines[ 0 ], Canvas.BOLD );
         posX += 10;
         posY += cr;