1 files changed, 23 insertions, 0 deletions

diff --git a/documentation/ref-manual/ref-classes.xml b/documentation/ref-manual/ref-classes.xml
index cde8f5bb9e..450501694c 100644
--- a/documentation/ref-manual/ref-classes.xml
+++ b/documentation/ref-manual/ref-classes.xml
@@ -1517,6 +1517,29 @@
     </para>
 </section>
 
+<section id='ref-classes-prserv'>
+    <title><filename>prserv.bbclass</filename></title>
+
+    <para>
+        The <filename>prserv</filename> class provides functionality for
+        using a
+        <ulink url='&YOCTO_DOCS_DEV_URL;#working-with-a-pr-service'>PR service</ulink>
+        in order to automatically manage the incrementing of the
+        <link linkend='var-PR'><filename>PR</filename></link> variable for
+        each recipe.
+    </para>
+
+    <para>
+        This class is enabled by default because it is inherited by the
+        <link linkend='ref-classes-package'><filename>package</filename></link>
+        class.
+        However, the OpenEmbedded build system will not use this variable
+        unless
+        <link linkend='var-PRSERV_HOST'><filename>PRSERV_HOST</filename></link>
+        has been set.
+    </para>
+</section>
+
 <section id='ref-classes-distutils'>
     <title>Python Extensions - <filename>distutils.bbclass</filename></title>