commit 11c187c0fb0fabfe4bd6cdc6cd523283b38077e6
Author: Leszek Koltunski <leszek@koltunski.pl>
Date:   Sun Mar 7 22:46:05 2021 +0100

    Correct comments; hide stuff from Javadoc.

diff --git a/src/main/java/org/distorted/library/main/InternalMaster.java b/src/main/java/org/distorted/library/main/InternalMaster.java
index b174841..37022df 100644
--- a/src/main/java/org/distorted/library/main/InternalMaster.java
+++ b/src/main/java/org/distorted/library/main/InternalMaster.java
@@ -32,6 +32,11 @@ import java.util.ArrayList;
  */
 public class InternalMaster
   {
+  /**
+   * Not part of public API, do not document (public only because has to be used in PostprocessEffects)
+   *
+   * @y.exclude
+   */
   public interface Slave
     {
     void doWork();
diff --git a/src/main/java/org/distorted/library/main/InternalStackFrame.java b/src/main/java/org/distorted/library/main/InternalStackFrame.java
index 50fdb9b..abf8d63 100644
--- a/src/main/java/org/distorted/library/main/InternalStackFrame.java
+++ b/src/main/java/org/distorted/library/main/InternalStackFrame.java
@@ -26,7 +26,17 @@ import java.util.HashMap;
 import java.util.LinkedList;
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
-
+/**
+ * Implements a single 'frame' of all varaibles needed to remember the internal state of the library.
+ * Such a frame must be remembered in a list whenever current Activity using the library fires off
+ * another Activity which also wants to use the library. When that happens, we create a new 'frame',
+ * remember the old one. When the second Activity ends and we come back to the first, we destroy the
+ * second frame and recall the first.
+ * <p>
+ * Not part of public API, do not document
+ *
+ * @y.exclude
+ */
 public class InternalStackFrame
 {
   private static class Job
diff --git a/src/main/java/org/distorted/library/main/InternalStackFrameList.java b/src/main/java/org/distorted/library/main/InternalStackFrameList.java
index f186684..92a9345 100644
--- a/src/main/java/org/distorted/library/main/InternalStackFrameList.java
+++ b/src/main/java/org/distorted/library/main/InternalStackFrameList.java
@@ -26,7 +26,13 @@ import java.util.HashMap;
 import java.util.Set;
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
-
+/**
+ * Implements a List of Frames (see InternalStackFrame)
+ * <p>
+ * Not part of public API, do not document
+ *
+ * @y.exclude
+ */
 public class InternalStackFrameList
 {
   private final static Object mLock = new Object();