updates for classes

source/presentation/4.0/model.md

@@ -56,7 +56,7 @@ __Previous Version:__ [3.0][prezi30]
 ## Introduction
 
 
-### 1.2. Terminology
+### Terminology
 
 This specification uses the following terms:
 
@@ -333,36 +333,32 @@ Animation Selectors have the following properties:
 
 ### Range
 
-Ranges are used to represent structure within an object beyond the default order of the Canvases in the `items` property of the Manifest, such as newspaper sections or articles, chapters within a book, or movements within a piece of music. Ranges can include Canvases, parts of Canvases, or other Ranges, creating a tree structure like a table of contents.
+Ranges are used to represent structure within a Manifest beyond the default order of the Containers in the `items` property of the Manifest, such as newspaper sections or articles, chapters within a book, or movements within a piece of music. Ranges can include Containers, parts of Containers via SpecificResources or fragment URIs, or other Ranges, creating a tree structure like a table of contents. The typical intent of adding a Range to the Manifest is to allow the client to display a linear or hierarchical navigation interface to enable the user to quickly move through the object's content.
 
-The intent of adding a Range to the Manifest is to allow the client to display a linear or hierarchical navigation interface to enable the user to quickly move through the object's content. Clients _SHOULD_ present only Ranges that have the `label` property and do not have a `behavior` value `no-nav` to the user. Clients _SHOULD NOT_ render Canvas labels as part of the navigation, and a Range that wraps the Canvas _MUST_ be created if this is the desired presentation.
-
-If there is no Range that has the `behavior` value `sequence`, and the Manifest does not have the `behavior` value `unordered`, then the client _SHOULD_ treat the order of the Canvases in the Manifest's `items` array as the default order. If there is one Range that has the `behavior` value `sequence`, then the client _MUST_ instead use this Range for the ordering. If there is more than one Range that has the `behavior` value `sequence`, for example a second Range to represent an alternative ordering of the pages of a manuscript, the first Range _SHOULD_ be used as the default and the others _SHOULD_ be able to be selected. Ranges that have the `behavior` value `sequence` _MUST_ be directly within the `structures` property of the Manifest, and _MUST NOT_ be [embedded][prezi30-terminology] or [referenced][prezi30-terminology] within other Ranges. These Ranges may have limited hierarchical nesting, but clients are not expected to traverse very deep structures in determining the default order. If this Range includes parts of Canvases, then these parts are the content to render by default and would generate separate entries in a navigation display. This allows for the Canvas to include content outside of the default view, such as a color bar or ruler.
-
-Ranges _MUST_ have URIs and they _SHOULD_ be HTTP(S) URIs. Top level Ranges are [embedded][prezi30-terminology] or externally [referenced][prezi30-terminology] within the Manifest in a `structures` property. These top level Ranges then embed or reference other Ranges, Canvases or parts of Canvases in the `items` property. Each entry in the `items` property _MUST_ be a JSON object, and it _MUST_ have the `id` and `type` properties. If a top level Range needs to be dereferenced by the client, then it _MUST NOT_ have the `items` property, such that clients are able to recognize that it should be retrieved in order to be processed.
-
-All of the Canvases or parts that should be considered as being part of a Range _MUST_ be included within the Range's `items` property, or a descendant Range's `items`.
-
-The Canvases and parts of Canvases need not be contiguous or in the same order as in the Manifest's `items` property or any other Range. Examples include newspaper articles that are continued in different sections, a chapter that starts half way through a page, or time segments of a single canvas that represent different sections of a piece of music.
-
-Ranges _MAY_ link to an Annotation Collection that has the content of the Range using the `supplementary` property. The [referenced][prezi30-terminology] Annotation Collection will contain Annotations that target areas of Canvases within the Range and link content resources to those Canvases.
+Ranges _MUST_ have URIs and they _SHOULD_ be HTTP(S) URIs. Top level Ranges are [embedded][prezi30-terminology] or externally [referenced][prezi30-terminology] within the Manifest in a `structures` property. These top level Ranges then embed or reference other Ranges, Containers or parts of Containers in the `items` property. Each entry in the `items` property _MUST_ be a JSON object, and it _MUST_ have the `id` and `type` properties. If a top level Range needs to be dereferenced by the client, then it _MUST NOT_ have the `items` property, such that clients are able to recognize that it should be retrieved in order to be processed.
 
+The included Containers and parts of Containers need not be contiguous or in the same order as in the Manifest's `items` property or any other Range. Examples include newspaper articles that are continued in different sections, a chapter that starts half way through a page, or time segments of a single canvas that represent different sections of a piece of music.
 
+Ranges _MAY_ link to an Annotation Collection that has the content of the Range using the `supplementary` property. The [referenced][prezi30-terminology] Annotation Collection will contain Annotations that target the Containers within the Range and link content resources to those Containers.
 
 ### Scene Components
+
 #### Cameras
 ##### PerspectiveCamera
 ##### OrthographicCamera
+
 #### Lights
 ##### AmbientLight
 ##### DirectionalLight
 ##### PointLight
 ##### SpotLight
+
 #### Transforms
 ##### TranslateTransform
 ##### RotateTransform
 ##### ScaleTransform
 
+
 ### Other Classes
 #### Agent
 #### Service