Index: bindings.c
==================================================================
--- bindings.c
+++ bindings.c
@@ -6,10 +6,11 @@
 /*
   This program is part of Free Hero Mesh and is public domain.
 */
 
 #define HEROMESH_BINDINGS
+#include <malloc.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include "SDL.h"
 #include "sqlite3.h"
@@ -271,10 +272,11 @@
               switch(name[1]) {
                 case '!': if(i>1) i=system(sqlite3_column_text(cmd->stmt,1)?:(const unsigned char*)"# "); break;
                 case ';': i=SQLITE_DONE; goto done;
                 case '?': if(i>1) puts(sqlite3_column_text(cmd->stmt,1)?:(const unsigned char*)"(null)"); break;
                 case 'm': if(i>1) screen_message(sqlite3_column_text(cmd->stmt,1)?:(const unsigned char*)"(null)"); break;
+                case 's': malloc_stats(); fprintf(stderr,"SQLite memory use: %lld %lld\n",(long long)sqlite3_memory_used(),(long long)sqlite3_memory_highwater(1)); break;
                 case 'x': sql_interactive(); break;
               }
             } else {
               k=name[0]*'\1\0'+name[1]*'\0\1';
               while(i && sqlite3_column_type(cmd->stmt,i-1)==SQLITE_NULL) i--;

Index: bindings.doc
==================================================================
--- bindings.doc
+++ bindings.doc
@@ -61,21 +61,37 @@
 
 '^T'
   Display the level title popup.
 
 '^d' <location>
-  Display the help text of the object at the location.
+  Display the pop-up help text of the object at the location.
 
 '^o' <location>
-  List objects at the specified coordinates.
+  List objects at the specified coordinates, to examine their values.
 
 
 === Editor commands ===
 
 '^c'
   Display the class selection menu.
 
+
+=== Commands available in game and editor ===
+
+'^E'
+  Switch to the editor.
+
+'^P'
+  Switch to the game play.
+
+'^Q'
+  Quit.
+
+'go' <level>
+  Go to the specified level. If the level number is negative, then it is
+  a level order number, otherwise it is a level ID number.
+
 
 === Mode-independent commands ===
 
 ':!' <command>
   Execute a system command.
@@ -87,21 +103,11 @@
   Write text to stdout.
 
 ':m' <text>
   Display text on the screen, wait to push enter to continue.
 
+':s'
+  Write memory allocation status to stderr.
+
 ':x'
   Ask for a SQL statement, execute it, and display the results.
 
-'^E'
-  Switch to the editor.
-
-'^P'
-  Switch to the game play.
-
-'^Q'
-  Quit.
-
-'go' <level>
-  Go to the specified level. If the level number is negative, then it is
-  a level order number, otherwise it is a level ID number.
-