diff --git a/core/src/processing/core/PApplet.java b/core/src/processing/core/PApplet.java
index 7c17eaff0..a55efbf6f 100644
--- a/core/src/processing/core/PApplet.java
+++ b/core/src/processing/core/PApplet.java
@@ -5825,12 +5825,19 @@ public class PApplet implements PConstants {
     return saveXML(xml, filename, null);
   }
 
-
+  /**
+   * @nowebref
+   */
   public boolean saveXML(XML xml, String filename, String options) {
     return xml.save(saveFile(filename), options);
   }
 
-
+  /**
+   * @webref input:files
+   * @param input String to parse as a JSONObject
+   * @see PApplet#loadJSONObject(String)
+   * @see PApplet#saveJSONObject(JSONObject, String)
+   */
   public JSONObject parseJSONObject(String input) {
     return new JSONObject(new StringReader(input));
   }
@@ -5867,12 +5874,20 @@ public class PApplet implements PConstants {
     return saveJSONObject(json, filename, null);
   }
 
-
+  /**
+   * @nowebref
+   */
   public boolean saveJSONObject(JSONObject json, String filename, String options) {
     return json.save(saveFile(filename), options);
   }
 
-
+/**
+   * @webref input:files
+   * @param input String to parse as a JSONArray
+   * @see JSONObject
+   * @see PApplet#loadJSONObject(String)
+   * @see PApplet#saveJSONObject(JSONObject, String)
+   */
   public JSONArray parseJSONArray(String input) {
     return new JSONArray(new StringReader(input));
   }
@@ -5881,7 +5896,6 @@ public class PApplet implements PConstants {
   /**
    * @webref input:files
    * @param filename name of a file in the data folder or a URL
-   * @see JSONObject
    * @see JSONArray
    * @see PApplet#loadJSONObject(String)
    * @see PApplet#saveJSONObject(JSONObject, String)
diff --git a/core/src/processing/opengl/PSurfaceJOGL.java b/core/src/processing/opengl/PSurfaceJOGL.java
index 81b070d4c..80dbe2949 100644
--- a/core/src/processing/opengl/PSurfaceJOGL.java
+++ b/core/src/processing/opengl/PSurfaceJOGL.java
@@ -942,8 +942,10 @@ public class PSurfaceJOGL implements PSurface {
 
     int peCount = 0;
     if (peAction == MouseEvent.WHEEL) {
-      peCount = nativeEvent.isShiftDown() ? (int)nativeEvent.getRotation()[0] :
-                                            (int)nativeEvent.getRotation()[1];
+      // Invert wheel rotation count so it matches JAVA2D's
+      // https://github.com/processing/processing/issues/3840
+      peCount = -(nativeEvent.isShiftDown() ? (int)nativeEvent.getRotation()[0]:
+                                              (int)nativeEvent.getRotation()[1]);
     } else {
       peCount = nativeEvent.getClickCount();
     }