+extern const char* const TEXT_PROPERTY;
+extern const char* const FONT_FAMILY_PROPERTY;
+extern const char* const FONT_STYLE_PROPERTY;
+extern const char* const POINT_SIZE_PROPERTY;
+extern const char* const MULTI_LINE_PROPERTY;
+extern const char* const HORIZONTAL_ALIGNMENT_PROPERTY;
+extern const char* const VERTICAL_ALIGNMENT_PROPERTY;
+extern const char* const TEXT_COLOR_PROPERTY;
+extern const char* const ENABLE_MARKUP_PROPERTY;
+extern const char* const SHADOW_PROPERTY;
+extern const char* const UNDERLINE_PROPERTY;
+extern const char* const OUTLINE_PROPERTY;
+extern const char* const BACKGROUND_PROPERTY;
+
+//NPatch visual
+extern const char* const BORDER_ONLY;
+extern const char* const BORDER;
+extern const char* const AUXILIARY_IMAGE_NAME;
+extern const char* const AUXILIARY_IMAGE_ALPHA_NAME;
+
+// non-animated property
+extern const char* const GRADIENT_TYPE_NAME;
+extern const char* const UNIT_TYPE_NAME;
+extern const char* const SPREAD_TYPE_NAME;
+
+// animated property
+extern const char* const START_POSITION_NAME;
+extern const char* const START_COLOR_NAME;
+extern const char* const END_POSITION_NAME;
+extern const char* const END_COLOR_NAME;
+extern const char* const ROTATE_CENTER_NAME;
+extern const char* const ROTATE_AMOUNT_NAME;
+extern const char* const OFFSET_NAME;
+
+// animation parameter property
+extern const char* const START_VALUE_NAME;
+extern const char* const TARGET_VALUE_NAME;
+extern const char* const DIRECTION_TYPE_NAME;
+extern const char* const DURATION_NAME;
+extern const char* const DELAY_NAME;
+extern const char* const REPEAT_NAME;
+extern const char* const REPEAT_DELAY_NAME;
+extern const char* const MOTION_TYPE_NAME;
+extern const char* const EASING_TYPE_NAME;
+
+// common shader property
+extern const char* const UNIFORM_START_POINT_NAME;
+extern const char* const UNIFORM_START_COLOR_NAME;
+extern const char* const UNIFORM_END_POINT_NAME;
+extern const char* const UNIFORM_END_COLOR_NAME;
+extern const char* const UNIFORM_ROTATE_CENTER_NAME;
+extern const char* const UNIFORM_ROTATE_ANGLE_NAME;
+extern const char* const UNIFORM_OFFSET_NAME;
+
+// Border visual
+extern const char* const COLOR_NAME;
+extern const char* const SIZE_NAME;
+extern const char* const ANTI_ALIASING;
+
+// properties: radial gradient
+extern const char* const CENTER_NAME; // Property::VECTOR2
+extern const char* const RADIUS_NAME; // Property::FLOAT
+
+// properties: linear&radial gradient
+extern const char* const STOP_OFFSET_NAME; // Property::Array FLOAT
+extern const char* const STOP_COLOR_NAME; // Property::Array VECTOR4
+extern const char* const UNITS_NAME; // Property::String "userSpaceOnUse | objectBoundingBox"
+extern const char* const SPREAD_METHOD_NAME; // Property::String "pad | reflect | repeat"
+
+//mesh visual
+extern const char* const OBJECT_URL_NAME;
+extern const char* const MATERIAL_URL_NAME;
+extern const char* const TEXTURES_PATH_NAME;
+extern const char* const SHADING_MODE_NAME;
+extern const char* const USE_MIPMAPPING_NAME;
+extern const char* const USE_SOFT_NORMALS_NAME;
+extern const char* const LIGHT_POSITION_NAME;
+
+//Primitive properties
+extern const char* const PRIMITIVE_SHAPE;
+extern const char* const SLICES;
+extern const char* const STACKS;
+extern const char* const SCALE_TOP_RADIUS;
+extern const char* const SCALE_BOTTOM_RADIUS;
+extern const char* const SCALE_HEIGHT;
+extern const char* const SCALE_RADIUS;
+extern const char* const SCALE_DIMENSIONS;
+extern const char* const BEVEL_PERCENTAGE;
+extern const char* const BEVEL_SMOOTHNESS;
+extern const char* const LIGHT_POSITION_UNIFORM_NAME;
+
+// Arc visual
+extern const char* const THICKNESS_NAME;
+extern const char* const START_ANGLE_NAME;
+extern const char* const SWEEP_ANGLE_NAME;
+extern const char* const CAP_NAME;