diff --git a/source/presentation/4.0/model.md b/source/presentation/4.0/model.md
index 041982d0b..d3498c754 100644
--- a/source/presentation/4.0/model.md
+++ b/source/presentation/4.0/model.md
@@ -405,7 +405,7 @@ For Timelines and Canvases, Annotations _MUST NOT_ target spatial or temporal po
 __Properties__<br/>
 An Annotation _MUST_ have the following properties: [id](#id), [type](#type), [target](#target), [motivation](#motivation).<br/><br/>
 An Annotation _SHOULD_ have the following properties: [body](#body).<br/><br/>
-An Annotation _MAY_ have the following properties: [label](#label), [metadata](#metadata), [summary](#summary), [provider](#provider), [thumbnail](#thumbnail), [requiredStatement](#requiredStatement), [rights](#rights), [navDate](#navDate), [navPlace](#navPlace), [provides](#provides), [behavior](#behavior), [timeMode](#timeMode), [stylesheet](#stylesheet), [seeAlso](#seeAlso), [service](#service), [homepage](#homepage), [rendering](#rendering), [partOf](#partOf), [canonical](#canonical), and [via](#via).<br/><br/>
+An Annotation _MAY_ have the following properties: [label](#label), [metadata](#metadata), [summary](#summary), [provider](#provider), [thumbnail](#thumbnail), [requiredStatement](#requiredStatement), [rights](#rights), [navDate](#navDate), [navPlace](#navPlace), [provides](#provides), [behavior](#behavior), [scope](#scope), [timeMode](#timeMode), [stylesheet](#stylesheet), [seeAlso](#seeAlso), [service](#service), [homepage](#homepage), [rendering](#rendering), [partOf](#partOf), [canonical](#canonical), and [via](#via).<br/><br/>
 {: .note}
 
 
@@ -469,7 +469,7 @@ A Textual Body is an embedded resource within an Annotation that carries, as the
 
 __Properties__<br/>
 A Textual Body _MUST_ have the following properties: [type](#type), [value](#value)<br/><br/>
-A Textual Body _MAY_ have the following properties: [id](#id), [position](#position), [transform](#transform), [scope](#scope), [styleClass](#styleClass), [height](#height), [width](#width), [duration](#duration), [language](#language), [format](#format), [label](#label), [metadata](#metadata), [summary](#summary), [provider](#provider), [thumbnail](#thumbnail), [requiredStatement](#requiredStatement), [rights](#rights), [behavior](#behavior), [seeAlso](#seeAlso), [service](#service), [homepage](#homepage), [rendering](#rendering), [canonical](#canonical), [via](#via), and [annotations](#annotations).<br/><br/>
+A Textual Body _MAY_ have the following properties: [id](#id), [position](#position), [transform](#transform), [styleClass](#styleClass), [height](#height), [width](#width), [duration](#duration), [language](#language), [format](#format), [label](#label), [metadata](#metadata), [summary](#summary), [provider](#provider), [thumbnail](#thumbnail), [requiredStatement](#requiredStatement), [rights](#rights), [behavior](#behavior), [seeAlso](#seeAlso), [service](#service), [homepage](#homepage), [rendering](#rendering), [canonical](#canonical), [via](#via), and [annotations](#annotations).<br/><br/>
 {: .note}
 
 
@@ -2472,7 +2472,11 @@ The value _MUST_ be a string, not a number, in order to allow for the "!" charac
 ### scope
 {: #scope}
 
-The scope of a Specific Resource is the context in which it should be interpreted, viewed, or used. For the purposes of IIIF, it is a pointer to one or more resources that are intended to be used by the client for the user to view or interact with the resource. In a Scene, this would typically be an instance of a Camera that should be activated and selected to set up the correct viewpoint. This specification does not establish specific expectations for references to other classes.
+The scope of an Annotation or Specific Resource is the context in which it should be interpreted, viewed, or used. For the purposes of IIIF, it is a pointer to one or more resources that are intended to be used by the client for the user to view or interact with the resource. 
+
+In a Scene, `scope` would typically be applied to a Content Resource or commenting Annotation and would reference a Camera that should be activated and selected to set the correct viewpoint in response to user interaction with that resource. Clients _MUST_ process `scope` as a short-hand expression of an Annotation where `motivation` is "activating"; where `action` values are `show`, `enable`, and `select`; where the `source` of the activating Annotation `body` is the Resource referenced by `scope`; and where the `target` is the Annotation or Specific Resource on which `scope` is specified. 
+
+This specification does not establish specific expectations for references to other classes.
 
 The value _MUST_ be an array of JSON objects.