taccum - Accumulation test.
    - RGBA, SB/DB (SB default).
    - cmd line options:
	-sb	Single buffer mode.
	-db	Double buffer mode.
    - keys:
	ESC	Quit
	1	Use filled polygon mode.
	2	Use outlined polygon mode.

tbitmap1 - Bitmap test.
    - RGBA/CI (RGBA default), SB/DB (SB default).
    - cmd line options:
	-rgb	RGBA mode.
	-ci	Color index mode.
	-sb	Single buffer mode.
	-db	Double buffer mode.
	   - keys:
	ESC	Quit.

tbitmap2 - Bitmap test.
    - RGBA/CI (RGBA default), SB/DB (SB default).
    - cmd line options:
	-rgb	RGBA mode.
	-ci	Color index mode.
	-sb	Single buffer mode.
	-db	Double buffer mode.

    - keys:
	ESC	Quit.
	1	Toggle display list mode.
	2	Toggle color animation mode.

tcopy - Pixel copy test.
    - RGBA, SB/DB (SB default).
    - cmd line options:
	-sb		Single buffer mode.
	-db		Double buffer mode.

	-f <file name>	RGB image file.
    - keys:
	ESC		Quit.
	Z		Increase zoom factor.
	z		Decrease zoom factor.
    - mouse input:
	Left		Copy location.

tdepth - Z buffer test.
    - RGBA/CI (RGBA default), SB/DB (SB default).
    - cmd line options:
	-rgb	RGBA mode.
	-ci	Color index mode.
	-sb	Single buffer mode.
	-db	Double buffer mode.
    - keys:
	ESC	Quit.
	1	Toggle anti-aliased mode.
	2	Toggle stipple mode.

teval - Evaluator test.
    - RGBA, SB/DB (SB default).
    - cmd line options:
	-sb	Single buffer mode.
	-db	Double buffer mode.
    - keys:
	ESC	Quit.
	LEFT	Rotate.
	RIGHT	Rotate.
	UP	Rotate.
	DOWN	Rotate.
	1	Toggle dimensions.
	2	Toggle dimensions.
	e	Use eval mode.
	m	Use mesh mode.
	f	Toggle polygon mode.
	p	Toggle point mode.
	c	Toggle color mode.
	t	Toggle texture mode.
	l	Toggle lighting mode.

tfog - Fog test.
    - RGBA/CI (RGBA default), SB/DB (SB default).
    - cmd line options:
	-rgb	RGBA mode.
	-ci	Color index mode.
	-sb	Single buffer mode.
	-db	Double buffer mode.
    - keys:
	ESC	Quit.
	LEFT	Rotate.
	RIGHT	Rotate.
	UP	Rotate.
	DOWN	Rotate.
	D	Increase fog density.
	d	Decrease fog density.

tline - Line test.
    - RGBA/CI (RGBA default), SB/DB (SB default).
    - cmd line options:
	-rgb	RGBA mode.
	-ci	Color index mode.
	-sb	Single buffer mode.
	-db	Double buffer mode.
    - keys:
	ESC	Quit.
	W	Increase line width.
	w	Decrease line width.
	1	Toggle stipple mode.
	2	Toggle anti-aliased mode.

tlogo - Demo.
    - RGBA/CI (RGBA default), SB/DB (SB default).
    - cmd line options:
	-rgb	RGBA mode.
	-ci	Color index mode.
	-sb	Single buffer mode.
	-db	Double buffer mode.
    - keys:
	ESC	Quit.
	LEFT	Rotate.
	RIGHT	Rotate
	UP	Move clipping plane.
	DOWN	Move clipping plane.
	Z	Translate.
	z	Translate.
	1	Use GL_POINT polygon mode.
	2	Use GL_LINE polygon mode.
	3	Use GL_FILL polygon mode.
	p	Toggle polygon fill modes.
	4	Use GL_NICEST for GL_POLYGON_SMOOTH_HINT.
	5	Use anti-aliased polygon mode.
	6	Use aliased polygon mode.
	8	Toggle dither mode.
	9	Toggle stipple polygon mode.
	0	Toggle flat/smooth shading mode.
	q	Disable cull mode.
	w	Use front face cull mode.
	e	Use back face cull mode.
	r	Use clockwise front face mode.
	t 	Use counter-clockwise front face mode.
	y	Use MSB first stipple pattern.
	u	Use LSB first stipple pattern.
	a	Use brick texture map.
	s	Use checker texture map.
	d	Disable texture map.
	f	Use decal texture environment mode.
	g	Use modulate texture environment mode.

tnurb - Nurb test.
    - RGBA, SB/DB (SB default).
    - cmd line options:
	-sb	Single buffer mode.
	-db	Double buffer mode.
    - keys:
	ESC	Quit.
	LEFT	Rotate.
	RIGHT	Rotate.
	UP	Rotate.
	DOWN	Rotate.

tolympic - Olymipic rings demo.
    - RGBA/CI (RGBA default), SB/DB (SB default).
    - cmd line options:
	-rgb	RGBA mode.
	-ci	Color index mode.
	-sb	Single buffer mode.
	-db	Double buffer mode.
    - keys:
	ESC	Quit.
	SPACE	Restart demo.

tpoint - Point test.
    - RGBA/CI (RGBA default), SB/DB (SB default).
    - cmd line options:
	-rgb	RGBA mode.
	-ci	Color index mode.
	-sb	Single buffer mode.
	-db	Double buffer mode.
    - keys:
	ESC	Quit.
	LEFT	Translate.
	RIGHT	Translate.
	UP	Translate.
	DOWN	Translate.
	W	Increase point width.
	w	Decrease point width.
	1	Toggle anti-aliased mode.

tprim - Primitive test.
    - RGBA/CI (RGBA default), SB/DB (SB default).
    - cmd line options:
	-rgb	RGBA mode.
	-ci	Color index mode.
	-sb	Single buffer mode.
	-db	Double buffer mode.
    - keys:
	ESC	Quit.
	1	Toggle flat/smooth shade mode.
	2	Toggle outlined/filled polygon mode.
	3	Toggle color mask mode.

tquad - Quadric test.
    - RGBA/CI (RGBA default), SB/DB (SB default).
    - cmd line options:
	-rgb		RGBA mode.
	-ci		Color index mode.
	-sb		Single buffer mode.
	-db		Double buffer mode.
	-f <file name>	texture file.
    - keys:
	ESC		Quit.
	LEFT		Rotate.
	RIGHT		Rotate.
	UP		Rotate.
	DOWN		Rotate.
	X		Rotate.
	x		Rotate.
	1		Use GLU_FILL draw style.
	2		Use GLU_POINT draw style.
	3		Use GLU_LINE draw style.
	4		Use GLU_SILHOUETTE draw style.
	0		Toggle flat/smooth shade mode.
	f		Cylce through quadrics.
	d		Toggle orientation.
	A		Increase number of stacks.
	a		Decrease number of stacks.
	S		Increase number of slices.
	s		Decrease number of slices.
	G		Increase radius1.
	g		Decrease radius1.
	J		Increase radius2.
	j		Decrease radius2.
	H		Increase height.
	h		Decrease height.
	K		Increase angle1.
	k		Decrease angle1.
	L		Increase angle2.
	l		Decrease angle2.
	z		Toggle texture mode.
	q		Disable cull mode.
	w		Use front face cull mode.
	e		Use back face cull mode.
	r		Use clockwise front face mode.
	t 		Use counter-clockwise front face mode.
	y		Toggle dither mode.

tselect - Selection test.
    - RGBA, SB.
    - keys:
	ESC	Quit.
	LEFT	Rotate.
	RIGHT	Rotate.
	Z	Increase zoom factor.
	z	Decrease zoom factor.
	d	Zoom at current mouse location.
	f	Print feedback information.
	l	Toggle outlined/filled polygon mode.
    - mouse:
	Left	Recolor selected triangle.
	Center	Enlarge selected triangle.
	Right	Delete selected triangle.

tspeed - Speed test.
    - RGBA/CI (RGBA default), SB/DB (SB default).
    - cmd line options:
	-rgb	RGBA mode.
	-ci	Color index mode.
	-sb	Single buffer mode.
	-db	Double buffer mode.
    - keys:
	ESC	Quit.
	a	Toggle anti-aliased mode.
	d	Toggle z buffering mode.
	f	Toggle fog mode.
	F	Toggle fog hint mode.
	s	Toggle flat/smooth shading mode.
	t	Toggle texturing mode.

tsphere - Spheremap test.
    - RGBA, SB/DB (SB default).
    - cmd line options:
	-sb		Single buffer mode.
	-db		Double buffer mode.
	-f <file name>	texture file.
	-3		Use RGB components.
	-4		Use RGBA components.
    - keys:
	ESC		Quit.
        LEFT		Rotate about the y axis.
        RIGHT		Rotate about the y axis.
        UP		Rotate about the x axis.
        DOWN		Rotate about the x axis.
        a		Toggle auto rotate mode.
        c		toggle between cylinder or cube object.
        t		Use torus object.
        d		Use decal texture mode.
      	m		Use modulate texture mode.
        l		Toggle lighted mode.
        f		Toggle fog mode.
        0		Use nearest magification filter.
        1		Use linear magification.
        2		Use nearest minification filter.
        3		Use linear minification filter. 
        4		Use nearest-mipmap-nearest minification filter. 
        5		Use nearest-mipmap-linear minification filter. 
        6		Use linear-mipmap-nearest minification filter. 
        7		Use linear-mipmap-linear minification filter. 

tstar - Demo.
    - RGBA, SB/DB (SB default).
    - cmd line options:
	-sb	Single buffer mode.
	-db	Double buffer mode.
    - keys:
	ESC	Quit.
	SPACE	Toggle weird movement mode.
	t	Toggle turbo mode.

tstencil - Stencil test.
    - RGBA, SB.

tstretch - Texture test.
    - RGBA, SB.
    - cmd line options:
	-sb		Single buffer mode.
	-db		Double buffer mode.
	-f <file name>	texture file.
    - keys:
	ESC		Quit.
	SPACE		Start animation.
    - mouse:
	Left		Added stretch point.

ttexture - Texture test.
    - RGBA, SB/DB (SB default).
    - cmd line options:
	-sb		Single buffer mode.
	-db		Double buffer mode.
	-f <file name>	texture file.
    - keys:
	ESC		Quit.
	LEFT		Rotate.
	RIGHT		Rotate.
	UP		Rotate.
	DOWN		Rotate.
	T		Translate.
	t		Translate.
	s		Toggle sphere map mode.
	0		Use nearest magification filter.
	1		Use linear magification filter.
	2		Use nearest minification filter.
	3		Use linear minification filter.
	4		Use nearest-mipmap-nearest minification filter.
	5		Use nearest-mipmap-linear minification filter.
	6		Use linear-mipmap-nearest minification filter.
	7		Use linear-mipmap-linear minification filter.

ttri - Triangle test.
    - RGBA/CI (RGBA default), SB/DB (SB default).
    - cmd line options:
	-rgb	RGBA mode.
	-ci	Color index mode.
	-sb	Single buffer mode.
	-db	Double buffer mode.
    - keys:
	ESC	Quit.
	LEFT	Translate.
	RIGHT	Translate.
	Z	Increase zoom factor.
	z	Decrease zoom factor.
	1	Use point polygon mode.
	2	Use line polygon mode.
	3	Use filled polygon mode.
	4	Use point primitive.
	5	Use line-loop primitive.
	6	Use polygon primitive.
	7	Toggle cull mode.
	8	Use clockwise/counter-clockwise front face mode.
	9	Toggle front/back face cull mode.
	v	Toggle show verticies mode.
	s	Toggle flat/smooth shade mode.
	h	Toggle hide bottom triangle mode.
	o	Toggle outline mode.
	m	Toggle dither mode.
	0	Toggle anti-aliased mode.

twave - Demo.
    - RGBA/CI (RGBA default), SB/DB (SB default).
    - cmd line options:
	-rgb		RGBA mode.
	-ci		Color index mode.
	-sb		Single buffer mode.
	-db		Double buffer mode.
	-grid <x> <y>	Number of grids.
	-size <number>	Size of grid.
	-wave <number>	Height of wave (floating point number).
	-frames <count>	Number of frames.
    - keys:
	ESC		Quit.
	c		Toggle contouring mode.
	s		Toggle flat/smooth shade mode.
	l		Toggle lighting mode.
	d		Toggle depth checking mode.
	SPACE		Toggle step/animation mode.
	n		Single step in step mode.
	a		Toggle spin mode.
