diff --git a/b2/db.c b/b2/db.c
index df793d9..4bf259f 100644
--- a/b2/db.c
+++ b/b2/db.c
@@ -11,6 +11,7 @@
 
 
 #include <stdlib.h>
+#include <stdio.h>
 #include <glib.h>
 
 #include "util.h"
@@ -154,3 +155,20 @@ void part_finalize(struct part *part, const struct field *field)
 		param = next;
 	}
 }
+
+
+void part_dump(FILE *file, const struct part *part)
+{
+	const struct param *p;
+
+	fprintf(file, "%s %s\n", part->domain, part->name);
+	if (part->param) {
+		fprintf(file, "   ");
+		for (p = part->param; p; p = p->next) {
+			fprintf(file, " %s=", p->u.field->name);
+			dump(file, p->u.field->fmt, &p->value);
+		}
+		fprintf(file, "\n");
+	}
+	if (part->stock);
+}
diff --git a/b2/db.h b/b2/db.h
index 0adfbb1..4648442 100644
--- a/b2/db.h
+++ b/b2/db.h
@@ -13,6 +13,9 @@
 #ifndef DB_H
 #define	DB_H
 
+#include <stdio.h>
+
+
 struct exchange {
 	const struct currency *dst;
 	double factor;
@@ -63,5 +66,6 @@ struct part *part_lookup(const char *domain, const char *name);
 struct part *part_add(const char *domain, const char *name);
 void part_alias(struct part *a, struct part *b);
 void part_finalize(struct part *part, const struct field *field);
+void part_dump(FILE *file, const struct part *part);
 
 #endif /* !DB_H */
diff --git a/b2/lang.y b/b2/lang.y
index 15a0404..5ed8f57 100644
--- a/b2/lang.y
+++ b/b2/lang.y
@@ -353,6 +353,7 @@ characteristics:
 	| part characteristics
 		{
 			part_finalize($1, hierarchy);
+			part_dump(stderr, $1);
 		}
 	;