Add subsection headers in pageinspect documentation

extracted from a patch from Jesper Pedersen 

diff --git a/doc/src/sgml/pageinspect.sgml b/doc/src/sgml/pageinspect.sgml
index 5c816c0226ce9f1ec0459a2183e4ac0123a1536d..d12dbac32db9a98ba06b4af2940d5647604264b2 100644 (file)
--- a/doc/src/sgml/pageinspect.sgml
+++ b/doc/src/sgml/pageinspect.sgml
@@ -14,7 +14,7 @@
  
 
  
-  Functions
+  <span class="marked">General </span>Functions
 
   
    
@@ -160,7 +160,36 @@ test=# SELECT * FROM heap_page_item_attrs(get_raw_page('pg_class', 0), 'pg_class
      
     
    
-   
+
+   
+    
+     fsm_page_contents(page bytea) returns text
+     
+      fsm_page_contents
+     
+    
+
+    
+     
+      fsm_page_contents shows the internal node structure
+      of a FSM page. The output is a multiline string, with one line per
+      node in the binary tree within the page. Only those nodes that are not
+      zero are printed. The so-called "next" pointer, which points to the
+      next slot to be returned from the page, is also printed.
+     
+     
+      See src/backend/storage/freespace/README for more
+      information on the structure of an FSM page.
+     
+    
+   
+  
+ 
+
+ 
+  B-tree Functions
+
+  
    
     
      bt_metap(relname text) returns record
@@ -261,7 +290,13 @@ test=# SELECT * FROM bt_page_items('pg_cast_oid_index', 1);
      
     
    
+  
+ 
 
+ 
+  BRIN Functions
+
+  
    
     
      brin_page_type(page bytea) returns text
@@ -365,7 +400,13 @@ test=# SELECT * FROM brin_page_items(get_raw_page('brinidx', 5),
      
     
    
+  
+ 
+
+ 
+  GIN Functions
 
+  
    
     
      gin_metapage_info(page bytea) returns record
@@ -449,29 +490,6 @@ test=# SELECT first_tid, nbytes, tids[0:5] AS some_tids
      
     
    
-
-   
-    
-     fsm_page_contents(page bytea) returns text
-     
-      fsm_page_contents
-     
-    
-
-    
-     
-      fsm_page_contents shows the internal node structure
-      of a FSM page. The output is a multiline string, with one line per
-      node in the binary tree within the page. Only those nodes that are not
-      zero are printed. The so-called "next" pointer, which points to the
-      next slot to be returned from the page, is also printed.
-     
-     
-      See src/backend/storage/freespace/README for more
-      information on the structure of an FSM page.
-     
-    
-