- minor grammar and spelling updates

content/notes/wwdc21/10259.md

@@ -4,7 +4,7 @@ contributors: trav-ma
 
 ## UIKeyboardLayoutGuide
 
-Old way of listening for keyboard notifications and adjusting your layout
+Here is the old way of listening for keyboard notifications and adjusting your layout:
 
 ```swift
     //...
@@ -44,7 +44,7 @@ Old way of listening for keyboard notifications and adjusting your layout
 }
 ```
 
-New in iOS15. Using UIKeyboardLayoutGuide:
+New in iOS15. Here is the suggested new way using UIKeyboardLayoutGuide:
 
 ```swift
 view.keyboardLayoutGuide.topAnchor.constraint(
@@ -56,15 +56,15 @@ view.keyboardLayoutGuide.topAnchor.constraint(
 - Use view.keyboardLayoutGuide
 - For most common use cases, simply update to use .topAnchor
 - Matches keyboard animations like bring up and dismiss
-- Follows height changes when keyboard height adapts for different cases
+- Follows height changes as the keyboard can be taller or shorter based on content (showing emojis, etc)
 - When the keyboard is undocked the guide will drop to the bottom of the screen and be the width of your window
 	- Anything you've tied to the top anchor will follow
 - It accounts for safe-area insets
 
 
 ### Why did Apple create a new custom layout guide vs a generic layout guide?
 
-Answer: giving the developer more control of how their layout responds to keyboards
+Answer: giving the developer more control over how their layout responds to keyboards
 
 - You have the ability to fully follow the keyboard in all its incarnations, if you so choose, by using a new property: `.followsUndockedKeyboard`.
 	- If you set it to true, the guide will follow the keyboard when it's undocked or floating, giving you a lot of control over how your layout responds to wherever the keyboard may be.
@@ -73,9 +73,11 @@ Answer: giving the developer more control of how their layout responds to keyboa
 
 ## UITrackingLayoutGuide
 
+`UIKeyboardLayoutGuide` is a subclass of the new `UITrackingLayoutGuide`
+
 - Tracks the constraints you want to change when it moves around the screen. 
 - You can give it an array of constraints that activate when near a specific edge, and deactivate when leaving it
-- You can give it an array that activates when specifically awayFrom an edge, and deactivates when near it.
+- You can give it an array that activates when specifically away from an edge, and deactivates when near it.
 
 ### Example Code