Second round of feedback edits from @colleenmcginnis

platform/ios/docs/guides/Adding Markers to a Map.md

@@ -13,19 +13,19 @@ Our annotations API includes the `MGLAnnotationImage`, and `MGLAnnotationView` c
 **MGLAnnotationImage** is an annotation class that is easily customizable with any `UIImage`.
 It is highly performant, as the images are rendered directly using OpenGL. However, if you need to animate your annotations or control z-layer ordering, consider working with **MGLAnnotationView** which supports any animation that can be applied to a `UIView`. View hierarchy can also be manipulated by using `zPosition` property on `CALayer` to order an individual view, or by using other instance methods available on `UIView` such as `-[UIView bringSubviewToFront:]`.
 
-**MGLAnnotationView** is an annotation class that is an easily customizable `UIView`. Use this class if you need your markers to be dynamic or animatable. `MGLAnnotationView` has a significant advantage over `MGLAnnotationImage` when you need every annotation to be unique. For example, annotation views are ideal for showing user locations on a map using high-resolution profile pictures. However, the map can slow down when many annotation views are visible at the same time, so if you need to add a very large amount of markers, consider using our runtime styling APIs instead.
+**MGLAnnotationView** is an annotation class that is an easily customizable `UIView`. Use this class if you need your markers to be dynamic or animated. `MGLAnnotationView` has a significant advantage over `MGLAnnotationImage` when you need every annotation to be unique. For example, annotation views are ideal for showing user locations on a map using high-resolution profile pictures. However, the map can slow down when many annotation views are visible at the same time, so if you need to add a very large number of markers, consider using our runtime styling APIs instead.
 
 Both `MGLAnnotationImage` and `MGLAnnotationView` can become interactive by adding a [few lines of code](https://www.mapbox.com/ios-sdk/examples/marker/). When the user taps an annotation, the annotation’s name appears in a basic callout. An annotation view can additionally respond to [drag-and-drop gestures](https://www.mapbox.com/ios-sdk/examples/draggable-views/).
 
-## **Runtime Styling API**
+## **Runtime styling API**
 
-For absolute full control of how markers are displayed on a map, consider using our [runtime styling](#) APIs. Like `MGLAnnotationImage`, it is a performant approach to adding markers because they rendered directly using OpenGL. However, the runtime styling APIs also provide support for rendering labels together with icons, finer control of z-ordering, and clustering, so consider using this set of APIs if you need to display a large amount of highly customizable markers.
+For full control of how markers are displayed on a map, consider using our [runtime styling](runtime-styling.html) APIs. Like `MGLAnnotationImage`, it is a performant approach to adding markers because they rendered directly using OpenGL. However, the runtime styling APIs also provide support for rendering labels together with icons, finer control of z-ordering, and clustering, so consider using this set of APIs if you need to display a large amount of highly customizable markers.
 
 Our runtime styling API is the most powerful option if you need to create rich data visualizations within in your map, but it is the most complex and has a steeper learning curve than our annotations API.
 
 The runtime styling API includes our `MGLSymbolStyleLayer` and `MGLCircleStyleLayer` classes that can be used to dynamically display on markers on map when used in conjunction with either an `MGLVectorSource` or an `MGLShapeSource`.
 
-If you need to implement callouts with the `MGLSymbolStyleLayer` or `MGLCircleStyleLayer`, you will need to implement your own tap gesture recognizer that calls `-[MGLMapView visibleFeaturesAtPoint:inStyleLayersWithIdentifiers:]` to get the tapped point feature, then show a UIView you provide. Additionally, if you need to animate markers when using the runtime styling APIs, consider using an timer to update the source data coordinates accordingly.
+If you need to implement callouts with the `MGLSymbolStyleLayer` or `MGLCircleStyleLayer`, you will need to implement your own tap gesture recognizer that calls `-[MGLMapView visibleFeaturesAtPoint:inStyleLayersWithIdentifiers:]` to get the tapped point feature, then show a `UIView` you provide. Additionally, if you need to animate markers when using the runtime styling APIs, consider using an timer to update the source data coordinates accordingly.
 
 | ![`MGLCircleStyleLayer`](img/adding-points-to-a-map/circle-layer.png "MGLCircleStyleLayer")               | ![`MGLSymbolStyleLayer`](img/adding-points-to-a-map/symbol-layer.png "MGLSymbolStyleLayer")              |
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