| Declare "variablename" "type" | Declare a variable's type (e.g., "uniform float")
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| Display "outputimage.tiff" "tiff" "rgb" | Specify the output image
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| Display "outputimage.shd" "shadow" "z" | Specify the output shadow image
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| Imager "background" "color" [r g b] | Specify the output image's background color
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| Clipping znear zfar | Specify the near and far clipping planes (>0)
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| Format 1280 1024 1.0 | Specify the resolution of the output image
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| PixelSamples 2 2 | Number of imaging samples in X and Y per pixel
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| Projection "perspective" "fov" 60. | Specify to use a perspective projection and its field-of-view angle
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| Projection "orthographic" | Specify to use an orthographics projection
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| ScreenWindow xleft xright ybottom ytop | Use in place of the field of view angle
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| Translate tx ty tz | Pre-append a translation matrix
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| Rotate deg rx ry rz | Pre-append a rotation matrix
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| Scale sx sy sz | Pre-append a scaling matrix
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| WorldBegin | Start the scene definition
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| WorldEnd | End the scene definition
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| AttributeBegin | Push all atributes on the stack
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| AttributeEnd | Pop all attributes from the stack
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| TransformBegin | Push the current transform on the stack
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| TransformEnd | Pop the current transform from the stack
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| Color [r g b] | Set the current color (passed to shaders as Cs)
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| Opacity [r g b] | Set the current opacity (passed to shaders as Os)
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| Surface "shadername" "variablename" [variablevale(s)] | Specify a surface shader
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| Displacement "shadername" "variablename" [variablevale(s)] | Specify a displacement shader
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| LightSource "ambientlight" num "intensity" i "lightcolor" [r g b] | Specify the ambient light
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| LightSource "distantlight" num "intensity" I "lightcolor" [r g b] "from" [x y z] "to" [x y z] | Specify a distant (parallel) light
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| Polygon "P" [x0 y0 z0 x1 y1 z1 . . .] "st" [s0 t0 s1 t1 . . .] | Draw a polygon
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| Points "P" [x0 y0 z0 x1 y1 z1 . . .] "constantwidth" w | Draw a series of points
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| Points "P" [x0 y0 z0 x1 y1 z1 . . .] "width" [w0 w1 . . .] | Draw a series of points
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| Sphere radius zmin zmax sweepAngle | Draw a sphere
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| Cylinder radius zmin zmax sweepAngle | Draw a cylinder
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| Cone height radius sweepDegrees | Draw a cone
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| Torus majorRadius minorRadius startAngle endAngle sweepAngle | Draw a torus
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| Hyperboloid x0 y0 z0 x1 y1 z1 sweep_Angle | Draw a hyperboloid
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| Paraboloid zmaxRadius zmin zmax sweepAngle | Draw a paraboloid
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| Disk xHeight radius sweepAngle | Draw a disk
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| Basis "Bezier" 3 | Set the basis for a parametric curve
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| Curves "cubic" [4] "nonperiodic" "P" [x0 y0 z0 x1 y1 z1 . . .] "constantwidth" [w] | Draw a parametric curve
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| Patch "bilinear" "P" [x0 y0 z0 x1 y1 z1 x2 y2 z2 x3 y3 z3] | Draw a bilinear surface
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| Basis "Bezier" 3 "Bezier" 3 | Set the basis for a parametric surface
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| Patch "bicubic" "P" [x00 y00 z00 x01 y01 z01 ... x33 y33 z33] | Draw a parametric surface
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| SolidBegin "operation" | Begin collection geometry for a CSG operation (union, intersection, difference)
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| SolidBegin "primitive" | Begin defining geometry for a single CSG primitive
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| SolidEnd | End a primitive definition or an operator collection
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