diff --git a/src/edu/nps/moves/dis7/utilities/stream/X3dCreateInterpolators.java b/src/edu/nps/moves/dis7/utilities/stream/X3dCreateInterpolators.java
index b8d189f2eec3c1f33f9153c3f4a99cec0b73e9b7..cdde26fba9c4bafa588cc784b4cb9b33f886a6e9 100644
--- a/src/edu/nps/moves/dis7/utilities/stream/X3dCreateInterpolators.java
+++ b/src/edu/nps/moves/dis7/utilities/stream/X3dCreateInterpolators.java
@@ -14,7 +14,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 /**
- *
+ * Create X3D PositionInterpolator and OrientationInterpolator nodes corresponding to x-y-z points in stream.
  * @author Tobias Brennenstuhl @ NPS
  */
 public class X3dCreateInterpolators {
diff --git a/src/edu/nps/moves/dis7/utilities/stream/X3dCreateLineSet.java b/src/edu/nps/moves/dis7/utilities/stream/X3dCreateLineSet.java
index c3593409db560ea1eda0cbb7227cb06476be90cb..12894e46765503442ed81a8f26250884b637591f 100644
--- a/src/edu/nps/moves/dis7/utilities/stream/X3dCreateLineSet.java
+++ b/src/edu/nps/moves/dis7/utilities/stream/X3dCreateLineSet.java
@@ -14,7 +14,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 /**
- *
+ *Create X3D LineSet node corresponding to x-y-z points in stream.
  * @author Tobias Brennenstuhl @ NPS
  */
 public class X3dCreateLineSet {
diff --git a/src/edu/nps/moves/dis7/utilities/stream/X3dSlidingWindowCompression.java b/src/edu/nps/moves/dis7/utilities/stream/X3dSlidingWindowCompression.java
index 0191e00f0485bd14fb448b266fa9fbd5d9b7e0b4..e48a340a7c4f879488f10e1863e7835030de5484 100644
--- a/src/edu/nps/moves/dis7/utilities/stream/X3dSlidingWindowCompression.java
+++ b/src/edu/nps/moves/dis7/utilities/stream/X3dSlidingWindowCompression.java
@@ -11,7 +11,7 @@ import java.util.Set;
 import java.util.TreeMap;
 
 /**
- *
+ * Reduce X3D interpolator size by omitting unnecessary intermediate data points and smoothing data as appropriate.
  * @author Tobias Brennenstuhl @ NPS
  */
 public class X3dSlidingWindowCompression {