diff --git a/src/button.js b/src/button.js
index 71aaff61..b25a7534 100644
--- a/src/button.js
+++ b/src/button.js
@@ -282,7 +282,7 @@ $.Button = function( options ) {
         clickHandler: function( event ) {
             if ( event.quick ) {
                 /**
-                 * Raised when a mouse button is pressed and released or touch is initiated end ended in the Button element within the time and distance threshold.
+                 * Raised when a mouse button is pressed and released or touch is initiated and ended in the Button element within the time and distance threshold.
                  *
                  * @event click
                  * @memberof OpenSeadragon.Button
@@ -299,7 +299,7 @@ $.Button = function( options ) {
             //console.log( "%s : handling key %s!", _this.tooltip, event.keyCode);
             if( 13 === event.keyCode ){
                 /***
-                 * Raised when a mouse button is pressed and released or touch is initiated end ended in the Button element within the time and distance threshold.
+                 * Raised when a mouse button is pressed and released or touch is initiated and ended in the Button element within the time and distance threshold.
                  *
                  * @event click
                  * @memberof OpenSeadragon.Button
diff --git a/src/openseadragon.js b/src/openseadragon.js
index 7f763da2..9dc40535 100644
--- a/src/openseadragon.js
+++ b/src/openseadragon.js
@@ -118,8 +118,8 @@
   * @memberof OpenSeadragon
   *
   * @property {Array|String|Function|Object[]|Array[]|String[]|Function[]} [tileSources=null]
-  *     As an Array, the tileSource can hold either be all Objects or mixed
-  *     types of Arrays of Objects, String, Function. When a value is a String,
+  *     As an Array, the tileSource can hold either Objects or mixed
+  *     types of Arrays of Objects, Strings, or Functions. When a value is a String,
   *     the tileSource is used to create a {@link OpenSeadragon.DziTileSource}.
   *     When a value is a Function, the function is used to create a new
   *     {@link OpenSeadragon.TileSource} whose abstract method
@@ -241,10 +241,10 @@
   *     point is less than this many pixels, ignore the drag event.
   *
   * @property {Number} [zoomPerClick=2.0]
-  *     The "zoom distance" per mouse click or touch tap.
+  *     The "zoom distance" per mouse click or touch tap. **Note:** Setting this to 1.0 effectively disables the click-to-zoom feature.
   *
   * @property {Number} [zoomPerScroll=1.2]
-  *     The "zoom distance" per mouse scroll or touch pinch.
+  *     The "zoom distance" per mouse scroll or touch pinch. **Note:** Setting this to 1.0 effectively disables the mouse-wheel zoom feature.
   *
   * @property {Number} [zoomPerSecond=1.0]
   *     The number of seconds to animate a single zoom event over.
diff --git a/src/viewer.js b/src/viewer.js
index 8d4e3fdc..a7a91b87 100644
--- a/src/viewer.js
+++ b/src/viewer.js
@@ -54,13 +54,7 @@ var THIS = {},
  * @memberof OpenSeadragon
  * @extends OpenSeadragon.EventSource
  * @extends OpenSeadragon.ControlDock
- * @param {OpenSeadragon.Options} [options] - Viewer options. If an {@link OpenSeadragon.Options} object is passed first, all other parameters are ignored. This is the preferred method of creating a viewer.
- * @param {String} element - Id of Element to attach to,
- * @param {String} xmlPath - Xpath ( TODO: not sure! ),
- * @param {String} prefixUrl - Url used to prepend to paths, eg button images, etc.
- * @param {OpenSeadragon.Control[]} controls - Array of OpenSeadragon.Control,
- * @param {OpenSeadragon.Overlay[]} overlays - Array of OpenSeadragon.Overlay,
- * @param {OpenSeadragon.Control[]} overlayControls - An Array of ( TODO: not sure! )
+ * @param {OpenSeadragon.Options} options - Viewer options.
  *
  **/
 $.Viewer = function( options ) {
@@ -120,7 +114,7 @@ $.Viewer = function( options ) {
         customControls: [],
 
         //These are originally not part options but declared as members
-        //in initialize.  Its still considered idiomatic to put them here
+        //in initialize.  It's still considered idiomatic to put them here
         source:         null,
         /**
          * @member {OpenSeadragon.Drawer} drawer
@@ -141,7 +135,7 @@ $.Viewer = function( options ) {
         navigator:      null,
 
         //A collection viewport is a separate viewport used to provide
-        //simultanious rendering of sets of tiles
+        //simultaneous rendering of sets of tiles
         collectionViewport:     null,
         collectionDrawer:       null,