diff --git a/sigil/common/core/.classpath b/sigil/common/core/.classpath
index b26935e..5fb534c 100644
--- a/sigil/common/core/.classpath
+++ b/sigil/common/core/.classpath
@@ -3,6 +3,6 @@
 	<classpathentry kind="src" path="src"/>
 	<classpathentry exported="true" kind="lib" path="lib/bndlib.jar" sourcepath="/bld-ivy/lib/ant/bnd-0.0.312.jar"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/J2SE-1.5"/>
-	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
+	<classpathentry kind="con" path="org.cauldron.sigil.core.classpathContainer"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>
diff --git a/sigil/common/core/.project b/sigil/common/core/.project
index 3bbec56..f9a6d90 100644
--- a/sigil/common/core/.project
+++ b/sigil/common/core/.project
@@ -11,12 +11,7 @@
 			</arguments>
 		</buildCommand>
 		<buildCommand>
-			<name>org.eclipse.pde.ManifestBuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-		<buildCommand>
-			<name>org.eclipse.pde.SchemaBuilder</name>
+			<name>org.cauldron.sigil.core.newtonBuilder</name>
 			<arguments>
 			</arguments>
 		</buildCommand>
@@ -24,5 +19,6 @@
 	<natures>
 		<nature>org.eclipse.pde.PluginNature</nature>
 		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.cauldron.sigil.core.newtonnature</nature>
 	</natures>
 </projectDescription>
diff --git a/sigil/common/core/sigil.properties b/sigil/common/core/sigil.properties
new file mode 100644
index 0000000..0b8febe
--- /dev/null
+++ b/sigil/common/core/sigil.properties
@@ -0,0 +1,32 @@
+
+# sigil project file, saved by plugin.
+
+version: 0.0.0
+
+-bundles: \
+	org.cauldron.bld.core, \
+
+-sourcedirs: \
+	src, \
+
+-exports: \
+	org.apache.felix.sigil.config, \
+	org.apache.felix.sigil.core, \
+	org.apache.felix.sigil.model, \
+	org.apache.felix.sigil.model.common, \
+	org.apache.felix.sigil.model.eclipse, \
+	org.apache.felix.sigil.model.osgi, \
+	org.apache.felix.sigil.repository, \
+
+-imports: \
+	org.apache.felix.sigil.config, \
+	org.apache.felix.sigil.core, \
+	org.apache.felix.sigil.model, \
+	org.apache.felix.sigil.model.common, \
+	org.apache.felix.sigil.model.eclipse, \
+	org.apache.felix.sigil.model.osgi, \
+	org.apache.felix.sigil.repository, \
+	org.eclipse.core.runtime;version=3.4.0, \
+	org.osgi.framework;version=1.4.0, \
+
+# end
diff --git a/sigil/eclipse/core/.classpath b/sigil/eclipse/core/.classpath
index e26ebfb..ef0616d 100644
--- a/sigil/eclipse/core/.classpath
+++ b/sigil/eclipse/core/.classpath
@@ -1,14 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/J2SE-1.5"/>
-	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins">
-		<accessrules>
-			<accessrule kind="accessible" pattern="org/cauldron/newton/descriptor/**"/>
-			<accessrule kind="accessible" pattern="org/eclipse/pde/internal/**"/>
-		</accessrules>
-	</classpathentry>
-	<classpathentry kind="con" path="org.eclipse.jdt.junit.JUNIT_CONTAINER/3"/>
 	<classpathentry kind="src" path="src"/>
 	<classpathentry exported="true" kind="lib" path="lib/commons-lang-2.4.jar" sourcepath="org.cauldron.sigil.coresrc.zip"/>
+	<classpathentry kind="con" path="org.cauldron.sigil.core.classpathContainer"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/J2SE-1.5"/>
 	<classpathentry kind="output" path="build/classes"/>
 </classpath>
diff --git a/sigil/eclipse/core/.project b/sigil/eclipse/core/.project
index ed75ac8..71a8094 100644
--- a/sigil/eclipse/core/.project
+++ b/sigil/eclipse/core/.project
@@ -11,18 +11,13 @@
 			</arguments>
 		</buildCommand>
 		<buildCommand>
-			<name>org.eclipse.pde.ManifestBuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-		<buildCommand>
-			<name>org.eclipse.pde.SchemaBuilder</name>
+			<name>org.cauldron.sigil.core.newtonBuilder</name>
 			<arguments>
 			</arguments>
 		</buildCommand>
 	</buildSpec>
 	<natures>
-		<nature>org.eclipse.pde.PluginNature</nature>
 		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.cauldron.sigil.core.newtonnature</nature>
 	</natures>
 </projectDescription>
diff --git a/sigil/eclipse/core/sigil.properties b/sigil/eclipse/core/sigil.properties
new file mode 100644
index 0000000..b76b23a
--- /dev/null
+++ b/sigil/eclipse/core/sigil.properties
@@ -0,0 +1,37 @@
+
+# sigil project file, saved by plugin.
+
+version: 0.0.0
+
+-bundles: \
+	org.cauldron.sigil.core, \
+
+-sourcedirs: \
+	src, \
+
+-imports: \
+	org.apache.felix.sigil.config, \
+	org.apache.felix.sigil.core, \
+	org.apache.felix.sigil.model, \
+	org.apache.felix.sigil.model.common, \
+	org.apache.felix.sigil.model.eclipse, \
+	org.apache.felix.sigil.model.osgi, \
+	org.apache.felix.sigil.repository, \
+	org.eclipse.core.runtime;resolve=compile, \
+	org.eclipse.core.resources;version=3.4.1, \
+	org.eclipse.core.runtime;version=3.4.0, \
+	org.eclipse.core.runtime.jobs;version=3.4.0, \
+	org.eclipse.debug.core;version=3.4.0, \
+	org.eclipse.jdt.core;version=3.4.2, \
+	org.eclipse.jface.dialogs;version=3.4.1, \
+	org.eclipse.jface.preference;version=3.4.1, \
+	org.eclipse.jface.resource;version=3.4.1, \
+	org.eclipse.jface.util;version=3.4.1, \
+	org.eclipse.ui;version=3.4.1, \
+	org.eclipse.ui.dialogs;version=3.4.1, \
+	org.eclipse.ui.plugin;version=3.4.1, \
+	org.osgi.framework;version=1.4.0, \
+	org.osgi.service.prefs;version=1.1.0, \
+	org.osgi.util.tracker;version=1.3.3, \
+
+# end
diff --git a/sigil/eclipse/help/.classpath b/sigil/eclipse/help/.classpath
index 64c5e31..d2c2949 100644
--- a/sigil/eclipse/help/.classpath
+++ b/sigil/eclipse/help/.classpath
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/J2SE-1.5"/>
-	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
 	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="con" path="org.cauldron.sigil.core.classpathContainer"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>
diff --git a/sigil/eclipse/help/.project b/sigil/eclipse/help/.project
index 3e3bb3b..4ffe2a8 100644
--- a/sigil/eclipse/help/.project
+++ b/sigil/eclipse/help/.project
@@ -11,18 +11,13 @@
 			</arguments>
 		</buildCommand>
 		<buildCommand>
-			<name>org.eclipse.pde.ManifestBuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-		<buildCommand>
-			<name>org.eclipse.pde.SchemaBuilder</name>
+			<name>org.cauldron.sigil.core.newtonBuilder</name>
 			<arguments>
 			</arguments>
 		</buildCommand>
 	</buildSpec>
 	<natures>
-		<nature>org.eclipse.pde.PluginNature</nature>
 		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.cauldron.sigil.core.newtonnature</nature>
 	</natures>
 </projectDescription>
diff --git a/sigil/eclipse/help/sigil.properties b/sigil/eclipse/help/sigil.properties
new file mode 100644
index 0000000..2b628e2
--- /dev/null
+++ b/sigil/eclipse/help/sigil.properties
@@ -0,0 +1,26 @@
+
+# sigil project file, saved by plugin.
+
+version: 0.0.0
+
+-bundles: \
+	org.cauldron.sigil.help, \
+
+-sourcedirs: \
+	src, \
+
+-imports: \
+	org.eclipse.core.resources;version=3.4.1, \
+	org.eclipse.core.runtime;version=3.4.0, \
+	org.eclipse.jface.action;version=3.4.1, \
+	org.eclipse.jface.dialogs;version=3.4.1, \
+	org.eclipse.jface.viewers;version=3.4.1, \
+	org.eclipse.jface.window;version=3.4.1, \
+	org.eclipse.jface.wizard;version=3.4.1, \
+	org.eclipse.ui;version=3.4.1, \
+	org.eclipse.ui.actions;version=3.4.1, \
+	org.eclipse.ui.part;version=3.4.1, \
+	org.eclipse.ui.plugin;version=3.4.1, \
+	org.osgi.framework;version=1.4.0, \
+
+# end
diff --git a/sigil/eclipse/obr/.classpath b/sigil/eclipse/obr/.classpath
index 64c5e31..7e9cc7e 100644
--- a/sigil/eclipse/obr/.classpath
+++ b/sigil/eclipse/obr/.classpath
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/J2SE-1.5"/>
-	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
 	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="con" path="org.cauldron.sigil.core.classpathContainer"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/J2SE-1.5"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>
diff --git a/sigil/eclipse/obr/.project b/sigil/eclipse/obr/.project
index 7990e04..b9b5088 100644
--- a/sigil/eclipse/obr/.project
+++ b/sigil/eclipse/obr/.project
@@ -11,18 +11,13 @@
 			</arguments>
 		</buildCommand>
 		<buildCommand>
-			<name>org.eclipse.pde.ManifestBuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-		<buildCommand>
-			<name>org.eclipse.pde.SchemaBuilder</name>
+			<name>org.cauldron.sigil.core.newtonBuilder</name>
 			<arguments>
 			</arguments>
 		</buildCommand>
 	</buildSpec>
 	<natures>
-		<nature>org.eclipse.pde.PluginNature</nature>
 		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.cauldron.sigil.core.newtonnature</nature>
 	</natures>
 </projectDescription>
diff --git a/sigil/eclipse/obr/sigil.properties b/sigil/eclipse/obr/sigil.properties
new file mode 100644
index 0000000..6978789
--- /dev/null
+++ b/sigil/eclipse/obr/sigil.properties
@@ -0,0 +1,19 @@
+
+# sigil project file, saved by plugin.
+
+version: 0.0.0
+
+-bundles: \
+	org.cauldron.sigil.obr, \
+
+-sourcedirs: \
+	src, \
+
+-imports: \
+	org.eclipse.core.runtime;version=3.4.0, \
+	org.eclipse.jface.preference;version=3.4.1, \
+	org.eclipse.jface.wizard;version=3.4.1, \
+	org.eclipse.ui.plugin;version=3.4.1, \
+	org.osgi.framework;version=1.4.0, \
+
+# end
diff --git a/sigil/eclipse/search/.classpath b/sigil/eclipse/search/.classpath
index 254ffb7..c151ef1 100644
--- a/sigil/eclipse/search/.classpath
+++ b/sigil/eclipse/search/.classpath
@@ -2,7 +2,7 @@
 <classpath>
 	<classpathentry exported="true" kind="lib" path="lib/bcel-5.2.jar"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/J2SE-1.5"/>
-	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
 	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="con" path="org.cauldron.sigil.core.classpathContainer"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>
diff --git a/sigil/eclipse/search/.project b/sigil/eclipse/search/.project
index 3e37565..929ddaf 100644
--- a/sigil/eclipse/search/.project
+++ b/sigil/eclipse/search/.project
@@ -11,18 +11,13 @@
 			</arguments>
 		</buildCommand>
 		<buildCommand>
-			<name>org.eclipse.pde.ManifestBuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-		<buildCommand>
-			<name>org.eclipse.pde.SchemaBuilder</name>
+			<name>org.cauldron.sigil.core.newtonBuilder</name>
 			<arguments>
 			</arguments>
 		</buildCommand>
 	</buildSpec>
 	<natures>
-		<nature>org.eclipse.pde.PluginNature</nature>
 		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.cauldron.sigil.core.newtonnature</nature>
 	</natures>
 </projectDescription>
diff --git a/sigil/eclipse/search/sigil.properties b/sigil/eclipse/search/sigil.properties
new file mode 100644
index 0000000..f45c32c
--- /dev/null
+++ b/sigil/eclipse/search/sigil.properties
@@ -0,0 +1,23 @@
+
+# sigil project file, saved by plugin.
+
+version: 0.0.0
+
+-bundles: \
+	org.cauldron.sigil.search, \
+
+-sourcedirs: \
+	src, \
+
+-imports: \
+	org.apache.felix.sigil.model, \
+	org.apache.felix.sigil.model.common, \
+	org.apache.felix.sigil.model.eclipse, \
+	org.apache.felix.sigil.model.osgi, \
+	org.apache.felix.sigil.repository, \
+	org.eclipse.core.runtime;version=3.4.0, \
+	org.eclipse.jdt.core;version=3.4.2, \
+	org.eclipse.ui.plugin;version=3.4.1, \
+	org.osgi.framework;version=1.4.0, \
+
+# end
diff --git a/sigil/eclipse/ui/.classpath b/sigil/eclipse/ui/.classpath
index 6f93ad7..8be1017 100644
--- a/sigil/eclipse/ui/.classpath
+++ b/sigil/eclipse/ui/.classpath
@@ -2,10 +2,6 @@
 <classpath>
 	<classpathentry kind="src" path="src"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
-	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins">
-		<accessrules>
-			<accessrule kind="accessible" pattern="org/eclipse/pde/internal/ui/parts/*"/>
-		</accessrules>
-	</classpathentry>
+	<classpathentry kind="con" path="org.cauldron.sigil.core.classpathContainer"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>
diff --git a/sigil/eclipse/ui/.project b/sigil/eclipse/ui/.project
index e736268..a8b1291 100644
--- a/sigil/eclipse/ui/.project
+++ b/sigil/eclipse/ui/.project
@@ -11,18 +11,13 @@
 			</arguments>
 		</buildCommand>
 		<buildCommand>
-			<name>org.eclipse.pde.ManifestBuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-		<buildCommand>
-			<name>org.eclipse.pde.SchemaBuilder</name>
+			<name>org.cauldron.sigil.core.newtonBuilder</name>
 			<arguments>
 			</arguments>
 		</buildCommand>
 	</buildSpec>
 	<natures>
-		<nature>org.eclipse.pde.PluginNature</nature>
 		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.cauldron.sigil.core.newtonnature</nature>
 	</natures>
 </projectDescription>
diff --git a/sigil/eclipse/ui/sigil.properties b/sigil/eclipse/ui/sigil.properties
new file mode 100644
index 0000000..689a18b
--- /dev/null
+++ b/sigil/eclipse/ui/sigil.properties
@@ -0,0 +1,47 @@
+
+# sigil project file, saved by plugin.
+
+version: 0.0.0
+
+-bundles: \
+	org.cauldron.sigil.ui, \
+
+-sourcedirs: \
+	src, \
+
+-imports: \
+	org.apache.felix.sigil.model, \
+	org.apache.felix.sigil.model.common, \
+	org.apache.felix.sigil.model.eclipse, \
+	org.apache.felix.sigil.model.osgi, \
+	org.apache.felix.sigil.repository, \
+	org.eclipse.core.resources;version=3.4.1, \
+	org.eclipse.core.runtime;version=3.4.0, \
+	org.eclipse.core.runtime.jobs;version=3.4.0, \
+	org.eclipse.debug.core;version=3.4.0, \
+	org.eclipse.jdt.core;version=3.4.2, \
+	org.eclipse.jdt.core.compiler;version=3.4.2, \
+	org.eclipse.jdt.core.dom;version=3.4.2, \
+	org.eclipse.jdt.core.dom.rewrite;version=3.4.2, \
+	org.eclipse.jface.action;version=3.4.1, \
+	org.eclipse.jface.dialogs;version=3.4.1, \
+	org.eclipse.jface.fieldassist;version=3.4.1, \
+	org.eclipse.jface.layout;version=3.4.1, \
+	org.eclipse.jface.operation;version=3.4.1, \
+	org.eclipse.jface.preference;version=3.4.1, \
+	org.eclipse.jface.resource;version=3.4.1, \
+	org.eclipse.jface.util;version=3.4.1, \
+	org.eclipse.jface.viewers;version=3.4.1, \
+	org.eclipse.jface.window;version=3.4.1, \
+	org.eclipse.jface.wizard;version=3.4.1, \
+	org.eclipse.ui;version=3.4.1, \
+	org.eclipse.ui.actions;version=3.4.1, \
+	org.eclipse.ui.dialogs;version=3.4.1, \
+	org.eclipse.ui.handlers;version=3.4.1, \
+	org.eclipse.ui.part;version=3.4.1, \
+	org.eclipse.ui.plugin;version=3.4.1, \
+	org.eclipse.ui.progress;version=3.4.1, \
+	org.osgi.framework;version=1.4.0, \
+	org.osgi.service.prefs;version=1.1.0, \
+
+# end
diff --git a/sigil/eclipse/utils/.classpath b/sigil/eclipse/utils/.classpath
index 64c5e31..d2c2949 100644
--- a/sigil/eclipse/utils/.classpath
+++ b/sigil/eclipse/utils/.classpath
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/J2SE-1.5"/>
-	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
 	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="con" path="org.cauldron.sigil.core.classpathContainer"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>
diff --git a/sigil/eclipse/utils/.project b/sigil/eclipse/utils/.project
index 0e1390a..c5cd0b2 100644
--- a/sigil/eclipse/utils/.project
+++ b/sigil/eclipse/utils/.project
@@ -11,18 +11,13 @@
 			</arguments>
 		</buildCommand>
 		<buildCommand>
-			<name>org.eclipse.pde.ManifestBuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-		<buildCommand>
-			<name>org.eclipse.pde.SchemaBuilder</name>
+			<name>org.cauldron.sigil.core.newtonBuilder</name>
 			<arguments>
 			</arguments>
 		</buildCommand>
 	</buildSpec>
 	<natures>
-		<nature>org.eclipse.pde.PluginNature</nature>
 		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.cauldron.sigil.core.newtonnature</nature>
 	</natures>
 </projectDescription>
diff --git a/sigil/eclipse/utils/sigil.properties b/sigil/eclipse/utils/sigil.properties
new file mode 100644
index 0000000..7c2a302
--- /dev/null
+++ b/sigil/eclipse/utils/sigil.properties
@@ -0,0 +1,17 @@
+
+# sigil project file, saved by plugin.
+
+version: 0.0.0
+
+-bundles: \
+	org.cauldron.sigil.utils, \
+
+-sourcedirs: \
+	src, \
+
+-imports: \
+	org.eclipse.core.resources;version=3.4.1, \
+	org.eclipse.core.runtime;version=3.4.0, \
+	org.eclipse.ui;version=3.4.1, \
+
+# end