Added abbr for RTC in Intro

index.html

@@ -23,7 +23,8 @@ <h2>Introduction</h2>
         <h3>What are collaboration tools?</h3>
 <p>For the purposes of this document, a <dfn>collaboration tool</dfn> is any software that supports features designed to facilitate the interactive creation, editing or annotation of content by multiple contributors, whether working in simultaneous collaboration or asynchronously. Examples of collaboration tools include</p>
         <ul>
-          <li>A Web-based text editor or word processor that enables multiple authors to edit content simultaneously while discussing their edits during a Real Time Communications teleconference, with each contributor&apos;s changes being integrated into the resulting text and propagated in real time to the collaborators.</li>
+          <li>A Web-based text editor or word processor that enables multiple authors to edit content simultaneously while discussing their edits during a Real Time Communications (<abbr title="Real Time
+			  Communications">RTC</abbr>) teleconference, with each contributor&apos;s changes being integrated into the resulting text and propagated in real time to the collaborators.</li>
 
 	  <li>A Web-based text editor or word processor that enables multiple authors to edit content asynchronously over many days and week, with each contributor&apos;s
 	  changes being integrated into the resulting text and propagated on next load to the collaborators.</li><li>A tool that enables Web pages to be annotated with comments that are automatically made available to other users of the annotation service who access the same pages with suitable software. The software may be included in a user agent, or it may be supplied as an extension.</li>