diff --git a/.idea/copyright/profiles_settings.xml b/.idea/copyright/profiles_settings.xml
index 3572571..e7bedf3 100644
--- a/.idea/copyright/profiles_settings.xml
+++ b/.idea/copyright/profiles_settings.xml
@@ -1,5 +1,3 @@
 <component name="CopyrightManager">
-  <settings default="">
-    <module2copyright />
-  </settings>
+  <settings default="" />
 </component>
\ No newline at end of file
diff --git a/.idea/libraries/scala_2_10_3.xml b/.idea/libraries/scala_2_10_3.xml
deleted file mode 100644
index 27fe7a8..0000000
--- a/.idea/libraries/scala_2_10_3.xml
+++ /dev/null
@@ -1,20 +0,0 @@
-<component name="libraryTable">
-  <library name="scala-2.10.3">
-    <CLASSES>
-      <root url="jar://$PROJECT_DIR$/../scala-latest/lib/akka-actors.jar!/" />
-      <root url="jar://$PROJECT_DIR$/../scala-latest/lib/diffutils.jar!/" />
-      <root url="jar://$PROJECT_DIR$/../scala-latest/lib/jline.jar!/" />
-      <root url="jar://$PROJECT_DIR$/../scala-latest/lib/scala-actors-migration.jar!/" />
-      <root url="jar://$PROJECT_DIR$/../scala-latest/lib/scala-actors.jar!/" />
-      <root url="jar://$PROJECT_DIR$/../scala-latest/lib/scala-compiler.jar!/" />
-      <root url="jar://$PROJECT_DIR$/../scala-latest/lib/scala-library.jar!/" />
-      <root url="jar://$PROJECT_DIR$/../scala-latest/lib/scala-partest.jar!/" />
-      <root url="jar://$PROJECT_DIR$/../scala-latest/lib/scala-reflect.jar!/" />
-      <root url="jar://$PROJECT_DIR$/../scala-latest/lib/scala-swing.jar!/" />
-      <root url="jar://$PROJECT_DIR$/../scala-latest/lib/scalap.jar!/" />
-      <root url="jar://$PROJECT_DIR$/../scala-latest/lib/typesafe-config.jar!/" />
-    </CLASSES>
-    <JAVADOC />
-    <SOURCES />
-  </library>
-</component>
\ No newline at end of file
diff --git a/bin/scalakml.jar b/bin/scalakml.jar
index daa05e1..ef96ca5 100644
Binary files a/bin/scalakml.jar and b/bin/scalakml.jar differ
diff --git a/build.sbt b/build.sbt
index 602df47..0dfa6fb 100755
--- a/build.sbt
+++ b/build.sbt
@@ -6,4 +6,4 @@ organization := "com.kodekutters"
 
 version := "1.0"
 
-scalaVersion := "2.10.3"
+scalaVersion := "2.10.4"
diff --git a/scalakml.iml b/scalakml.iml
index 389a5ae..547555c 100644
--- a/scalakml.iml
+++ b/scalakml.iml
@@ -1,5 +1,13 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <module type="JAVA_MODULE" version="4">
+  <component name="FacetManager">
+    <facet type="scala" name="Scala">
+      <configuration>
+        <option name="compilerLibraryLevel" value="Global" />
+        <option name="compilerLibraryName" value="scala-2.10.4" />
+      </configuration>
+    </facet>
+  </component>
   <component name="NewModuleRootManager" inherit-compiler-output="true">
     <exclude-output />
     <content url="file://$MODULE_DIR$">
@@ -7,8 +15,8 @@
     </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
-    <orderEntry type="library" name="scala-2.10.3" level="project" />
     <orderEntry type="library" name="scalaxal" level="project" />
+    <orderEntry type="library" name="scala-library" level="project" />
   </component>
 </module>
 
diff --git a/src/main/scala/com/scalakml/example/WriteExample1.scala b/src/main/scala/com/scalakml/example/WriteExample1.scala
index cbb5abd..71a8899 100755
--- a/src/main/scala/com/scalakml/example/WriteExample1.scala
+++ b/src/main/scala/com/scalakml/example/WriteExample1.scala
@@ -1,12 +1,12 @@
 package com.scalakml.example
 
-import com.scalakml.io.{KmlPrintWriter, KmlFileReader}
+import com.scalakml.io.{KmlPrintWriter}
 import xml.PrettyPrinter
 import com.scalakml.kml._
 import com.scalakml.kml.FeaturePart
 import com.scalakml.kml.Point
 import com.scalakml.kml.Placemark
-import scala.Some
+
 
 /**
  * Author: Ringo Wathelet
@@ -17,6 +17,7 @@ import scala.Some
 object WriteExample1 {
   def main(args: Array[String]) {
     println("....WriteExample1 start...\n")
+
     // create a Point at a location
     val point = Point(coordinates = Option(Seq.empty :+ new Location(151.21037, -33.8526)))
     // create a Placemark with the point, and a name
@@ -25,6 +26,7 @@ object WriteExample1 {
     val kml = Kml(feature = Option(placemark))
     // write the kml to the output file
     new KmlPrintWriter("./kml-files/Sydney-oz.kml").write(Option(kml), new PrettyPrinter(80, 3))
+
     println("\n....WriteExample1 done...")
   }
 }
diff --git a/src/main/scala/com/scalakml/example/WriteExample4.scala b/src/main/scala/com/scalakml/example/WriteExample4.scala
index f4ce698..9c53a4e 100755
--- a/src/main/scala/com/scalakml/example/WriteExample4.scala
+++ b/src/main/scala/com/scalakml/example/WriteExample4.scala
@@ -16,6 +16,6 @@ object WriteExample4 {
     // create a scala Kml object with a Placemark that contains a Point
     val kml = new Kml(new Placemark("Sydney", new Point(RelativeToGround, 151.21037, -33.8526, 12345.0)))
     // write the kml object to System.out as xml
-    new KmlPrintWriter().write(Option(kml), new PrettyPrinter(80, 3))
+    new KmlPrintWriter().write(kml, new PrettyPrinter(80, 3))
   }
 }
\ No newline at end of file
diff --git a/src/main/scala/com/scalakml/io/KmlFromXml.scala b/src/main/scala/com/scalakml/io/KmlFromXml.scala
index 04ceff3..b656b95 100755
--- a/src/main/scala/com/scalakml/io/KmlFromXml.scala
+++ b/src/main/scala/com/scalakml/io/KmlFromXml.scala
@@ -36,6 +36,7 @@ import scala.xml._
 import com.scalaxal.io.XalFromXml._
 import scala.language.postfixOps
 import scala.language.implicitConversions
+import scala.collection.mutable
 
 /**
  * @author Ringo Wathelet
diff --git a/src/main/scala/com/scalakml/io/KmlPrintWriter.scala b/src/main/scala/com/scalakml/io/KmlPrintWriter.scala
index a76edf2..8a36c23 100755
--- a/src/main/scala/com/scalakml/io/KmlPrintWriter.scala
+++ b/src/main/scala/com/scalakml/io/KmlPrintWriter.scala
@@ -33,6 +33,7 @@ package com.scalakml.io
 import java.io._
 import xml.{dtd, XML, PrettyPrinter}
 import scala.Some
+import com.scalakml.kml.Kml
 
 /**
  * @author Ringo Wathelet
@@ -82,6 +83,22 @@ class KmlPrintWriter(writer: Option[PrintWriter] = Some(new PrintWriter(System.o
     }
   }
 
+  /**
+   * convenience method
+   * @param value the Kml element
+   * @param pretty the pretty printer to use
+   */
+  def write(value: Kml, pretty: PrettyPrinter) = write[Option[Kml]](Option(value), pretty)
+
+  /**
+   * convenience method
+   * @param value the Kml element
+   */
+  def write(value: Kml) = write[Option[Kml]](Option(value))
+
+  /**
+   * close the writer
+   */
   def close() = if (writer.isDefined) writer.get.close()
 
 }
diff --git a/src/main/scala/com/scalakml/kml/Kml.scala b/src/main/scala/com/scalakml/kml/Kml.scala
index 0daa98f..062c9fe 100755
--- a/src/main/scala/com/scalakml/kml/Kml.scala
+++ b/src/main/scala/com/scalakml/kml/Kml.scala
@@ -33,6 +33,7 @@ package com.scalakml.kml
 import com.scalakml.atom._
 import com.scalaxal.xAL.AddressDetails
 import com.scalakml.gx.LatLonQuad
+import scala.collection.mutable
 
 /**
  * package of classes and constructs for the Google KML Version 2.2 model
@@ -1006,8 +1007,8 @@ case class FeaturePart(
 
   /**
    * returns a new object with value added to the sequence
-   * @param value to add
-   * @return a new object with value added to the sequence
+   * @param value to add to styleSelector
+   * @return a new FeaturePart with value added to the sequence of styleSelector
    */
   def addToStyleSelector(value: StyleSelector) = {
     this.copy(styleSelector = if (styleSelector == Nil) (Seq.empty :+ value) else (styleSelector :+ value))
@@ -1063,6 +1064,9 @@ case class Placemark(
   objectSimpleExtensionGroup: Seq[Any] = Nil) extends Feature {
 
   def this(geom: Geometry) = this(Option(geom))
+  def this(geom: Geometry, featurePart: FeaturePart) = this(Option(geom), featurePart)
+  def this(geom: Geometry, featurePart: FeaturePart, id: String) = this(Option(geom), featurePart, Option(id))
+  def this(geom: Geometry, featurePart: FeaturePart, id: String, targetId: String) = this(Option(geom), featurePart, Option(id), Option(targetId))
   def this(name: String) = this(None, new FeaturePart(name = Option(name)))
   def this(name: String, geom: Geometry) = this(Option(geom), new FeaturePart(name = Option(name)))
   def this(name: String, geom: Geometry, id: String) = this(Option(geom), new FeaturePart(name = Option(name)), Option(id))
@@ -1460,7 +1464,8 @@ case class Document(featurePart: FeaturePart = new FeaturePart(),
 
   def this(feature: Feature) = this(new FeaturePart(), Nil, (Seq.empty :+ feature))
   def this(name: String, feature: Feature) = this(new FeaturePart(name = Option(name)), Nil, (Seq.empty :+ feature))
-  def this(name: String, feature: Feature, schema: Schema) =
+  def this(name: String, schema: Schema) = this(new FeaturePart(name = Option(name)), (Seq.empty :+ schema), Nil)
+  def this(name: String, schema: Schema, feature: Feature) =
     this(new FeaturePart(name = Option(name)), (Seq.empty :+ schema), (Seq.empty :+ feature))
 
   /**