-#include <data/dict-class.h>
-#include <data/missing-values.h>
-#include <data/val-type.h>
+#include "data/dict-class.h"
+#include "data/missing-values.h"
+#include "data/val-type.h"
+#include "data/settings.h"
+
+/* Bitfields to identify traits of a variable */
+
+#define VAR_TRAIT_NAME 0x0001
+#define VAR_TRAIT_WIDTH 0x0002
+#define VAR_TRAIT_ROLE 0x0004
+#define VAR_TRAIT_LABEL 0x0008
+#define VAR_TRAIT_VALUE_LABELS 0x0010
+#define VAR_TRAIT_MISSING_VALUES 0x0020
+#define VAR_TRAIT_ALIGNMENT 0x0040
+#define VAR_TRAIT_MEASURE 0x0080
+#define VAR_TRAIT_DISPLAY_WIDTH 0x0100
+#define VAR_TRAIT_LEAVE 0x0200
+#define VAR_TRAIT_POSITION 0x0400
+#define VAR_TRAIT_ATTRIBUTES 0x0800
+#define VAR_TRAIT_PRINT_FORMAT 0x1000
+#define VAR_TRAIT_WRITE_FORMAT 0x2000
+