diff --git a/doc/src/sgml/pageinspect.sgml b/doc/src/sgml/pageinspect.sgml
index acbb05bc9c5..f95eaa8b508 100644
--- a/doc/src/sgml/pageinspect.sgml
+++ b/doc/src/sgml/pageinspect.sgml
@@ -25,11 +25,12 @@
     <listitem>
      <para>
       <function>get_raw_page</function> reads the specified block of the named
-      table and returns a copy as a <type>bytea</> value.  This allows a
+      relation and returns a copy as a <type>bytea</> value.  This allows a
       single time-consistent copy of the block to be obtained.
       <replaceable>fork</replaceable> should be <literal>'main'</literal> for
-      the main data fork, or <literal>'fsm'</literal> for the free space map,
-      or <literal>'vm'</literal> for the visibility map.
+      the main data fork, <literal>'fsm'</literal> for the free space map,
+      <literal>'vm'</literal> for the visibility map, or <literal>'init'</literal>
+      for the initialization fork.
      </para>
     </listitem>
    </varlistentry>
diff --git a/doc/src/sgml/storage.sgml b/doc/src/sgml/storage.sgml
index bd2dca39fcb..30f5e480578 100644
--- a/doc/src/sgml/storage.sgml
+++ b/doc/src/sgml/storage.sgml
@@ -237,8 +237,8 @@ The <function>pg_relation_filepath()</> function shows the entire path
 as a substitute for remembering many of the above rules.  But keep in
 mind that this function just gives the name of the first segment of the
 main fork of the relation &mdash; you may need to append a segment number
-and/or <literal>_fsm</> or <literal>_vm</> to find all the files associated
-with the relation.
+and/or <literal>_fsm</>, <literal>_vm</>, or <literal>_init</> to find all
+the files associated with the relation.
 </para>
 
 <para>