+ /**
+ * @brief The font size scale.
+ * @details name "fontSizeScale", type Property::FLOAT.
+ * @note The default value is 1.0 which does nothing.
+ * The given font size scale value is used for multiplying the specified font size before querying fonts.
+ *
+ * e.g. The rendering results of both cases are same.
+ * - fontSize: 15pt, fontSizeScale: 1.0
+ * - fontSize: 10pt, fontSizeScale: 1.5
+ */
+ FONT_SIZE_SCALE,
+
+ /**
+ * @brief The position for primary cursor.
+ * @details Name "primaryCursorPosition", type Property::INTEGER.
+ */
+ PRIMARY_CURSOR_POSITION,
+
+ /**
+ * @brief The color of the grab color.
+ * @details Name "grabHandleColor", type Property::VECTOR4.
+ */
+ GRAB_HANDLE_COLOR,