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diff --git a/src/client/cleanup.c b/src/client/cleanup.c
new file mode 100644
index 0000000..7df98e7
--- /dev/null
+++ b/src/client/cleanup.c
@@ -0,0 +1,41 @@
+/* src/client/cleanup.c */
+
+#include "cleanup.h"
+#include <stdint.h> /* uint32_t */
+#include <stdlib.h> /* free() */
+#include "command_db.h" /* free_command_db() */
+#include "misc.h" /* unload_interface_conf() */
+#include "windows.h" /* free_winmeta_and_endwin() */
+#include "world.h" /* world global */
+
+
+
+/* The clean-up flags set by set_cleanup_flag(). */
+static uint32_t cleanup_flags = 0x0000;
+
+
+
+extern void cleanup()
+{
+    free(world.map.cells);
+    free(world.log);
+    free(world.player_inventory);
+    if (cleanup_flags & CLEANUP_INTERFACE)/* Must come pre ncurses cleanup,   */
+    {                                     /* for by closing all windows it    */
+        unload_interface_conf();          /* relies on world.wmeta data freed */
+    }                                     /* by free_winmeta_and_endwin().    */
+    if (cleanup_flags & CLEANUP_NCURSES)
+    {
+        free_winmeta_and_endwin();
+    }
+    if (cleanup_flags & CLEANUP_COMMANDS)
+    {
+        free_command_db();
+    }
+}
+
+
+extern void set_cleanup_flag(enum cleanup_flag flag)
+{
+    cleanup_flags = cleanup_flags | flag;
+}