Reference:Keywords

POV-Ray has a number of reserved keywords which are listed below.

a
aa_level aa_threshold abs absorption accuracy acos acosh adaptive adc_bailout global setting adc_bailout radiosity agate agate_turb albedo diffuse albedo phong	albedo specular all all_intersections alpha altitude always_sample ambient ambient_light angle aoi aperture append arc_angle area_illumination	area_light array asc ascii asin asinh assumed_gamma atan atan2 atand atanh autostop average

b
b_spline background bezier_spline bicubic_patch bitwise_and bitwise_or bitwise_xor black_hole	blob blue blur_samples bokeh bounded_by box boxed bozo	break brick brick_size brightness brilliance bump_map bump_size bumps

c
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 object cubic pattern cubic warp cubic_spline cubic_wave cutaway_textures cylinder cylindrical

d
datetime debug declare default defined degrees density density_file	density_map dents deprecated df3 difference diffuse dimension_size dimensions	direction disc dispersion dispersion_samples dist_exp distance div double_illuminate

e
eccentricity else elseif emission finish emission media	end error error_bound evaluate exp	expand_thresholds exponent exterior extinction

f
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 for form frame_number frequency fresnel function

g
gamma bump maps gamma heightfield gamma image map gamma image pattern gather	gif global_lights global_settings gradient granite	gray gray_threshold green

h
height_field hexagon	hf_gray_16 hierarchy	hypercomplex hollow

i
if ifdef iff ifndef image_height image_map image_pattern image_width importance	include initial_clock initial_frame input_file_name inside inside_vector int interior interior_texture	internal interpolate intersection intervals inverse ior irid irid_wavelength isosurface

j
jitter jpeg	julia julia_fractal

l
lambda lathe leopard light_group light_source	linear_spline linear_sweep ln load_file local	location log look_at looks_like low_error_factor

m
macro magnet major_radius mandel map_type marble material material_map matrix max maximum_reuse	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 mm_per_unit mod mortar

n
natural_spline nearest_count no no_bump_scale no_image	no_radiosity no_reflection no_shadow noise_generator normal	normal_indices normal_map normal_vectors now number_of_waves

o
object octaves off offset omega	omnimax on once onion open	orient orientation orthographic ovus

p
panoramic parallel parametric pass_through pattern pavement perspective pgm phase phong phong_size photons	pi pigment pigment_map pigment_pattern planar plane png point_at poly polynomial poly_wave polygon	pot pow ppm precision precompute premultiplied pretrace_end pretrace_start prism prod projected_through pwr

q
quadratic_spline quadric quartic	quaternion quick_color quick_colour	quilted

r
radial radians radiosity radius rainbow ramp_wave rand range ratio	read reciprocal recursion_limit red reflection reflection_exponent refraction render repeat crackle pattern repeat warp	rgb rgbf rgbft rgbt right ripples rotate roughness

s
samples save_file scale scallop_wave scattering seed select shadowless sin sine_wave sinh sint8 sint16be sint16le sint32be sint32le 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 square srgb bump maps srgb color literals srgb heightfield	srgb image maps srgb image pattern srgbf srgbt srgbft statistics str strcmp strength strlen strlwr strupr sturm substr subsurface sum superellipsoid switch sys

t
t tan tanh target tau text texture texture_list texture_map tga thickness threshold	tiff tightness tile2 tiles tiling tolerance toroidal torus trace transform translate	translucency transmit triangle triangle_wave triangular true ttf turb_depth turbulence type

u
u uint8 uint16be uint16le 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 v_steps val variance vaxis_rotate	vcross vdot version vertex_vectors vlength	vnormalize vrotate vstr vturbulence

w
warning warp water_level	waves while width	wood wrinkles write

x
x

y
y	yes

z
z