+#ifndef U_HIDE_INTERNAL_API
+/**
+ * Constant for Unicode string name of new (in 2019) Japanese calendar era,
+ * root/English abbreviated version (ASCII-range characters).
+ * @internal
+ */
+#define JP_ERA_2019_ROOT "Reiwa"
+/**
+ * Constant for Unicode string name of new (in 2019) Japanese calendar era,
+ * Japanese abbreviated version (Han, or fullwidth Latin for testing).
+ * @internal
+ */
+#define JP_ERA_2019_JA "\\u4EE4\\u548C"
+/**
+ * Constant for Unicode string name of new (in 2019) Japanese calendar era,
+ * root and Japanese narrow version (ASCII-range characters).
+ * @internal
+ */
+#define JP_ERA_2019_NARROW "R"
+#endif // U_HIDE_INTERNAL_API
+