address comments

Author: jwshinjwshin

src/lib/sidenav/sidenav.md

@@ -18,6 +18,14 @@ A sidenav container may contain one or two `<md-sidenav>` elements. When there a
 `<md-sidenav>` elements, each must be placed on a different side of the container.
 See the section on positioning below.
 
+
+### Sidenav vs. Drawer
+The difference between sidenav and drawer is that the sidenav takes up fullscreen whereas drawer is a smaller element
+that takes up a subsection of the screen. `md-sidenav` has to be placed inside `md-sidenav-container` and `md-drawer`
+has to be placed inside `md-drawer-container`. Currently `md-drawer` and `md-sidenav` support all the same features.
+However, in the future we expect to add different features specific to the different use cases.
+
+
 ### Sidenav mode
 The sidenav can render in one of three different ways based on the `mode` property.
 
@@ -71,18 +79,14 @@ html, body, material-app, md-sidenav-container, .my-content {
 For a sidenav with a FAB (Floating Action Button) or other floating element, the recommended approach is to place the FAB
 outside of the scrollable region and absolutely position it.
 
-### Sidenav vs. Drawer
-The difference between sidenav and drawer is that the sidenav takes up fullscreen whereas drawer is a smaller element
-that takes up a subsection of the screen. `md-sidenav` has to be placed inside `md-sidenav-container` and `md-drawer`
-has to be placed inside `md-drawer-container`. More functionalities will be added to sidenav in the future.
-
 
 ### Disabling closing of sidenav and drawer
 By default, sidenav and drawer can be closed either by clicking on the backdrop or by pressing <kbd>ESCAPE</kbd>.
-`disableClose` attribute can be set on `md-drawer` or `md-sidenav` to disable closing by two methods. To enable one
-of the two methods to allow closing with `disableClose` attribute set, then custom event handlers can be used as below:
+The `disableClose` attribute can be set on `md-drawer` or `md-sidenav` to disable automatic closing when the backdrop
+is clicked or <kbd>ESCAPE</kbd> is pressed. To add custom logic on backdrop click, add a `(backdropClick)` listener to
+`md-sidenav-container`. For custom <kdb>ESCAPE</kbd> logic, a standard `(keydown)` listener will suffice.
 ```html
-<md-drawer-container (backdropClick)="customBackdropClickHandler()">
-  <md-drawer disableClose (keydown)="customKeydownHandler($event)"></md-drawer>
-</md-drawer-container>
+<md-sidenav-container (backdropClick)="customBackdropClickHandler()">
+  <md-sidenav disableClose (keydown)="customKeydownHandler($event)"></md-sidenav>
+</md-sidenav-container>
 ```