/* */ " " ' ' // = ! >= <= + - / * > < % & | ^ ~ } { : ( ) aa_level aa_threshold abs absorption accuracy acos acosh adaptive adc_bailout agate agate_turb all all_intersections alpha altitude always_sample ambient ambient_light angle aperture append arc_angle area_light array asc ascii asin asinh assumed_gamma atan atan2 atanh autostop average b_spline background bezier_spline bicubic_patch black_hole blob blue blur_samples bounded_by box boxed bozo #break brick brick_size brightness brilliance bump_map bump_size bumps camera #case caustics ceil cells charset checker chr circular clipped_by clock clock_delta clock_on collect color color_map colour colour_map component composite concat cone confidence conic_sweep conserve_energy contained_by control0 control1 coords cos cosh count crackle crand cube cubic cubic_spline cubic_wave cutaway_textures cylinder cylindrical #debug #declare #default defined degrees density density_file density_map dents df3 difference diffuse dimension_size dimensions direction disc dispersion dispersion_samples dist_exp distance div double_illuminate eccentricity #else emission #end #error error_bound evaluate exp expand_thresholds exponent exterior extinction face_indices facets fade_color fade_colour fade_distance fade_power falloff falloff_angle false #fclose file_exists filter final_clock final_frame finish fisheye flatness flip floor focal_point fog fog_alt fog_offset fog_type #fopen form frame_number frequency fresnel function gather gif global_lights global_settings gradient granite gray gray_threshold green h_angle height_field hexagon hf_gray_16 hierarchy hollow hypercomplex #if #ifdef iff #ifndef image_height image_map image_pattern image_width #include initial_clock initial_frame inside int interior interior_texture internal interpolate intersection intervals inverse ior irid irid_wavelength isosurface jitter jpeg julia julia_fractal lathe lambda leopard light_group light_source linear_spline linear_sweep ln load_file #local location log look_at looks_like low_error_factor #macro magnet major_radius mandel map_type marble material material_map matrix max max_extent max_gradient max_intersections max_iteration max_sample max_trace max_trace_level media media_attenuation media_interaction merge mesh mesh2 metallic method metric min min_extent minimum_reuse mod mortar natural_spline nearest_count no no_bump_scale no_image no_reflection no_shadow noise_generator normal normal_indices normal_map normal_vectors number_of_waves object octaves off offset omega omnimax on once onion open orient orientation orthographic panoramic parallel parametric pass_through pattern perspective pgm phase phong phong_size photons pi pigment pigment_map pigment_pattern planar plane png point_at poly poly_wave polygon pot pow ppm precision precompute pretrace_end pretrace_start prism projected_through pwr quadratic_spline quadric quartic quaternion quick_color quick_colour quilted radial radians radiosity radius rainbow ramp_wave rand #range range_divider ratio #read reciprocal recursion_limit red reflection reflection_exponent refraction #render repeat rgb rgbf rgbft rgbt right ripples rotate roughness samples save_file scale scallop_wave scattering seed select shadowless sin sine_wave sinh size sky sky_sphere slice slope slope_map smooth smooth_triangle solid sor spacing specular sphere sphere_sweep spherical spiral1 spiral2 spline split_union spotlight spotted sqr sqrt #statistics str strcmp strength strlen strlwr strupr sturm substr superellipsoid #switch sys t tan tanh target text texture texture_list texture_map tga thickness threshold tiff tightness tile2 tiles tolerance toroidal torus trace transform translate transmit triangle triangle_wave true ttf turb_depth turbulence type u u_steps ultra_wide_angle #undef union up use_alpha use_color use_colour use_index utf8 uv_indices uv_mapping uv_vectors v v_angle v_steps val variance vaxis_rotate vcross vdot #version vertex_vectors vlength vnormalize vrotate vstr vturbulence #warning warp water_level waves #while width wood wrinkles #write x y yes z