declare local include undef fopen fclose read write default version case range break debug error warning if ifdef ifndef switch while macro else end camera light_source light_group object blob sphere cylinder box cone height_field julia_fractal lathe prism sphere_sweep superellipsoid sor text torus bicubic_patch disc mesh mesh2 polygon triangle smooth_triangle plane poly cubic quartic quadric isosurface parametric union intersection difference merge function array spline vertex_vectors normal_vectors uv_vectors face_indices normal_indices uv_indices texture texture_list interior_texture texture_map material_map image_map color_map colour_map pigment_map normal_map slope_map bump_map density_map pigment normal material interior finish reflection irid slope pigment_pattern image_pattern warp media scattering density background fog sky_sphere rainbow global_settings radiosity photons pattern transform looks_like projected_through contained_by clipped_by bounded_by linear_spline quadratic_spline cubic_spline natural_spline bezier_spline b_spline read write append inverse open perspective orthographic fisheye ultra_wide_angle omnimax panoramic spherical spotlight jitter circular orient media_attenuation media_interaction shadowless parallel refraction collect pass_through global_lights hierarchy sturm smooth gif tga iff pot png pgm ppm jpeg tiff sys ttf quaternion hypercomplex linear_sweep conic_sweep type all_intersections split_union cutaway_textures no_shadow no_image no_reflection double_illuminate hollow uv_mapping all use_index use_color use_colour no_bump_scale conserve_energy fresnel average agate boxed bozo bumps cells crackle cylindrical density_file dents facets granite leopard marble onion planar quilted radial ripples spotted waves wood wrinkles solid use_alpha interpolate magnet noise_generator toroidal ramp_wave triangle_wave sine_wave scallop_wave cubic_wave poly_wave once map_type method fog_type hf_gray_16 charset ascii utf8 rotate scale translate matrix location right up direction sky angle look_at aperture blur_samples focal_point confidence variance radius falloff tightness point_at area_light adaptive fade_distance fade_power threshold strength water_level tolerance max_iteration precision slice u_steps v_steps flatness inside_vector accuracy max_gradient evaluate max_trace precompute target ior dispersion dispersion_samples caustics color colour rgb rgbf rgbt rgbft red green blue filter transmit gray hf fade_color fade_colour quick_color quick_colour brick checker hexagon brick_size mortar bump_size ambient diffuse brilliance crand phong phong_size metallic specular roughness reflection_exponent exponent thickness gradient spiral1 spiral2 agate_turb form metric offset df3 coords size mandel exterior julia control0 control1 altitude turbulence octaves omega lambda repeat flip black-hole orientation dist_exp major_radius frequency phase intervals samples ratio absorption emission aa_threshold aa_level eccentricity extinction distance turb_depth fog_offset fog_alt width arc_angle falloff_angle adc_bailout ambient_light assumed_gamma irid_wavelength number_of_waves always_sample brigthness count error_bound gray_threshold load_file low_error_factor max_sample minimum_reuse nearest_count pretrace_end pretrace_start recursion_limit save_file spacing gather max_trace_level autostop expand_thresholds x y z t u v yes no true false on off clock clock_delta clock_on final_clock final_frame frame_number image_height image_width initial_clock initial_frame pi version abs acos acosh asc asin asinh atan atanh atan2 ceil cos cosh defined degrees dimensions dimension_size div exp file_exists floor inside int ln log max min mod pow prod radians rand seed select sin sinh sqrt strcmp strlen sum tan tanh val vdot vlength min_extent max_extent trace vaxis_rotate vcross vrotate vnormalize vturbulence chr concat str strlwr strupr substr vstr sqr cube reciprocal pwr