diff --git a/Ant-Common.xml b/Ant-Common.xml
index 5c6f2b73..b52c381b 100644
--- a/Ant-Common.xml
+++ b/Ant-Common.xml
@@ -73,10 +73,17 @@
 
   <target description="delete all byproducts" name="clean">
     <delete>
-      <fileset dir="${basedir}" includes="**/*.class"/>
-      <fileset dir="${basedir}" includes="**/*Output.txt"/>
-      <fileset dir="${basedir}" includes="**/log.txt"/>
-      <fileset dir="${basedir}" includes="failures"/>
+      <fileset dir="${basedir}" casesensitive="yes">
+        <include name="**/*.class" />
+        <include name="**/*Output.txt" />
+        <include name="**/log.txt" />
+        <include name="failures" />
+        <exclude name="*.java"/>
+        <exclude name="Copyright.txt Templates.cpp InstantiateGenericType.cpp Mixins.cpp"/>
+        <exclude name="DogsAndRobots.cpp VendingMachineInput.txt Trash.dat DDTrash.dat VTrash.dat log.prop"/>
+        <exclude name="Face*.gif"/>
+        <exclude name="build.xml"/>
+      </fileset>
     </delete>
     <echo message="clean successful"/>
   </target>
diff --git a/tools/Examples.py b/tools/Examples.py
index 7a4edfd3..f90ca5bc 100644
--- a/tools/Examples.py
+++ b/tools/Examples.py
@@ -47,6 +47,8 @@ parser.add_argument("-a", "--ant", action='store_true',
     help="Copy ant build files from Github repository to extracted examples")
 parser.add_argument("-m", "--makeant", action='store_true',
     help="Make ant files that don't exist")
+parser.add_argument("-f", "--find", action='store_true',
+    help="Find non-java files in TIJDirectorsCut.txt")
 
 
 def extractExamples():
@@ -167,7 +169,8 @@ def copyAntBuildFiles():
         target = destination / common
         shutil.copy(str(build), str(target))
     shutil.copy(str(github / "Ant-Common.xml"), str(destination))
-
+    for face in (github / "gui").glob("*.gif"):
+        shutil.copy(str(face), str(destination / "gui"))
 
 
 
@@ -351,6 +354,18 @@ def createAntFiles():
         chapter.makeBuildFile()
 
 
+def findNonJavaFiles():
+    if not sourceText.exists():
+        print("Cannot find", sourceText)
+        sys.exit()
+    with sourceText.open("rb") as book:
+        text = book.read().decode("utf-8", "ignore")
+        for listing in re.findall("^//:.*?///:~", text, re.DOTALL | re.MULTILINE):
+            title = listing.splitlines()[0].strip()
+            if not title.endswith(".java"):
+                print(title)
+
+
 def default():
     clean()
     extractExamples()
@@ -378,5 +393,8 @@ if __name__ == '__main__':
     if args.makeant:
         createAntFiles()
 
+    if args.find:
+        findNonJavaFiles()
+
     if args.clean:
         clean()