add link to pvRequest.html

documentation/pvDatabaseCPP.html

@@ -36,7 +36,7 @@
 
 <div class="head">
 <h1>pvDatabaseCPP</h1>
-<h2 class="nocount">Master - 2018.07.11</h2>
+<h2 class="nocount">Master - 2018.09.18</h2>
 
 
 <h2 class="nocount">Abstract</h2>
@@ -67,7 +67,6 @@ The minimum that an extension must provide is a top level PVStructure and a proc
 <p>
 pvDatabaseCPP is one of the components of 
 EPICS Version 7
-</a>
 </p>
 <p>This document is only a guide to help locate code and documentation related to pvDatabaseCPP
 </p>
@@ -86,6 +85,18 @@ Some understanding of the components and how they are related is necessary in or
 develop code that uses pvDatabaseCPP.
 In particular read everything related to pvDatabase.
 </p>
+<p>pvDatabase has plugin support, which is implemented in <b>pvCopy</b>.
+<b>pvCopy</b> was originally implemented in <b>pvDataCPP</b>,
+but pvDatabaseCPP now implemnents its own version and adds plugin support.
+</p>
+<p>
+See 
+<a
+href="https://mrkraimer.github.io/website/pvRequest/pvRequest.html">
+pvRequest
+</a>
+for details.
+</p>
 <p>The developerGuide discusses code in a way that applies to both CPP and C++.
 For the descriptions of the CPP specific code consult the next section.
 </p>