Merge pull request #435 from w3c/terms-defined

Added a terms section in the intro

Author: GeorgeKerscher

UX-Guide-Metadata/draft/principles/index.html

@@ -133,7 +133,29 @@ <h2>Introduction</h2>
 			<p>The good news is more and more publishers are creating digital publications that are Born Accessible (i.e.,
 				accessible from the outset, not fixed later) and getting the accessibility validation or audit done by
 				independent organizations.</p>
-		</section>
+		
+<section id="terminology">
+   <h3>Terminology</h3>
+   
+<p>There are several terms used in these guidelines that should   be defined  for clarity:</p>
+   <dl>
+      <dt><dfn>digital publication</dfn></dt>
+           <dd>
+         <p>The term digital publication is used in this document to refer to publications produced in any number of digital formats. Digital publications are not limited to books, but encompass any written, visual, or audio work distributed and read in digital form.</p>
+         <p>Some examples of digital publications include ebooks, audiobooks, manga, comic books, journals, digital textbooks, picture books, and children's picture books with accompanying audio. The formats they come in include EPUB, PDF, and Digital Talking Books (DTB).</p>
+      </dd>
+      <dt><dfn>Reading System</dfn></dt>
+<dd>
+<p>All digital publications require a Reading System to present the publication to the end user. Reading Systems may be Apps that run on a smart phone or tablet. There are Reading Systems which are  applications  that run on  Personal Computers. There are also Reading Systems that are integrated in to dedicated devices devoted to a single purpose, for presenting a publication. There are even skills   that run on Smart Speakers that can be considered Reading Systems.</p>
+</dd>
+<dt><dfn>electronic braille</dfn></dt>
+<dt><dfn>refreshable braille</dfn></dt>
+<dd>
+<p>The terms "electronic braille" and "refreshable braille" are used interchangeably, which denotes a device with pop-up pins to present the braille on a tactile screen. These devices can be used as a display for a personal computer, or they may be a self-contained multipurpose note taker. </p>
+</dd>
+   </dl>
+</section>
+</section>
 		<section id="general-overview">
 			<h2>General overview</h2>
 
@@ -400,11 +422,12 @@ <h3 data-localization-id="nonvisual-reading-title">Supports nonvisual reading</h
 				<p>Indicates whether all content required for comprehension can be consumed in text and therefore is
 					fully available to assistive technologies and reading systems using text-to-speech or electronic
 					braille functionality.</p>
-
+<!--
 				<div class="note">
 					<p>The terms "electronic braille" and "refreshable braille" are used interchangeably, which denotes
 						a device with pop-up pins to present the braille on a tactile screen.</p>
 				</div>
+-->
 
 				<p>This field answers whether nonvisual reading is possible, not possible, or unknown.</p>