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 @@
get_raw_page reads the specified block of the named
- table and returns a copy as a bytea> value. This allows a
+ relation and returns a copy as a bytea> value. This allows a
single time-consistent copy of the block to be obtained.
fork should be 'main' for
- the main data fork, or 'fsm' for the free space map,
- or 'vm' for the visibility map.
+ the main data fork, 'fsm' for the free space map,
+ 'vm' for the visibility map, or 'init'
+ for the initialization fork.
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 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 — you may need to append a segment number
-and/or _fsm> or _vm> to find all the files associated
-with the relation.
+and/or _fsm>, _vm>, or _init> to find all
+the files associated with the relation.