docs(template-syntax): remove notes for Ward (#3247)

Author: wardbell

public/docs/ts/latest/guide/template-syntax.jade

@@ -146,28 +146,25 @@ block notable-differences
     * new [template expression operators](#expression-operators), such as `|` and `?.`
 
 h3#expression-context Expression context
-
-.alert.is-critical
-  :marked
-    Ward: you wanted to have a note here per our slack conversation where you said, 
-    "The context for terms in an expression is a blend of the data-bound component 
-    and the directive's context (if it has one).  The latter wins when the term is a property of both." 
-
 :marked
-  The *expression context* is typically the component instance.
-  In the following examples, the *title*  within double-curly braces, `{{title}}` is a property of the data-bound component.
-  In `[hidden]="isUnchanged"`,
-  _isUnchanged_ refers to the component's `isUnchanged` property.
+  The *expression context* is typically the _component_ instance.
+  In the following snippets, the `title`  within double-curly braces and the
+  `isUnchanged` in quotes refer to properties of the `AppComponent`.
 
 +makeExample('template-syntax/ts/src/app/app.component.html', 'context-component-expression')(format=".")
 :marked
-  The expression may also refer to properties of the template's own context
+  An expression may also refer to properties of the _template's_ context
   such as a [template input variable](#template-input-variable) (`let hero`)
   or a [template reference variable](#ref-vars) (`#heroInput`).
 +makeExample('template-syntax/ts/src/app/app.component.html', 'context-var')(format=".")
 :marked
-  Template context property names take precedence over component context names.
-  In `{{hero}}` above, the `hero` is the template input variable, not the component's `hero` property.
+  The context for terms in an expression is a blend of the _template variables_, 
+  the directive's _context_ object (if it has one), and the component's _members_.
+  If you reference a name that belongs to more than one of these namespaces,
+  the tempate variable name takes precedence, followed by a name in the directive's' _context_,
+  and, lastly, the component's member names.
+
+  The previous example presents such a name collision. The component has a `hero` property and the `*ngFor` defines a `hero` template variable. The `hero` in `{{hero}}` refers to the template input variable, not the component's property.
 
 block template-expressions-cannot
   :marked
@@ -1480,22 +1477,14 @@ a#inputs-outputs
     You have *limited* access to members of a **target** directive.
     You can only bind to properties that are explicitly identified as *inputs* and *outputs*.
 :marked
-  In the following example, `iconUrl` and `onSave` are members of a component
-  that are referenced within quoted syntax to the right of the `=`.
+  In the following snippet, `iconUrl` and `onSave` are data-bound members of the `AppComponent`
+  and are referenced within quoted syntax to the _right_ of the equals (`=`).
 +makeExample('template-syntax/ts/src/app/app.component.html', 'io-1')(format=".")
 :marked
-  They are *neither inputs nor outputs* of the component. They are data sources for their bindings.
+  They are *neither inputs nor outputs* of the component. They are **sources** for their bindings.
+  The targets are the native `<img>` and `<button>` elements.
 
-.alert.is-critical
-  :marked
-    Ward: I was momentarily uncertain below because the instructions say to look 
-    at `HeroDetailComponent` but it doesn't occur explicitly in the code sample. 
-    In the following paragraph I then see `HeroDetailComponent.hero` and think, 
-    "hm, ok, I guess that means we're inside `HeroDetailComponent`", but my 
-    assumption feels wobbly.
-
-:marked
-  Now look at `HeroDetailComponent` when it is the **target of a binding**.
+  Now look at a another snippet in which the `HeroDetailComponent` is the **target** of a binding on the _left_ of the equals&nbsp;(`=`).
 +makeExample('template-syntax/ts/src/app/app.component.html', 'io-2')(format=".")
 :marked
   Both `HeroDetailComponent.hero` and `HeroDetailComponent.deleteRequest` are on the **left side** of binding declarations.