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+Graphical tools targetting Cocoa, X11 and Linux framebuffer.
+
+	make GFX=cocoa
+	make GFX=x11
+	make GFX=fb
+
+								  brot
+
+Mandelbrot renderer.
+
+	-i n       depth
+	-s n       samples
+	-t a+bi    translate
+	-f a+bi    transform
+
+	q     quit
+	,.    depth
+	[]    samples
+	hl    real translation
+	kj    imaginary translation
+	ui    rotation
+	-+    scale
+	0     reset
+
+								  gfxx
+
+Graphics data explorer. Dumps PNGs.
+
+	-c {indexed,grayscale,rgb}    set color space
+	-p PATH                       load palette
+	-e {l,b}                      set byte order
+	-E {l,b}                      set bit order
+	-b NNNN                       set pad, R, G, B bits
+	-n N                          set offset
+	-f                            flip
+	-m                            mirror
+	-w N                          set width
+	-z N                          set scale
+	-o PREFIX                     set output prefix
+
+	q      quit
+	x      dump one frame
+	X      dump each frame
+	o      print options
+	[]     switch color spaces
+	p      sample palette
+	P      dump palette
+	{}     switch bits presets
+	e      swap byte order
+	E      swap bit order
+	hl     offset by byte
+	jk     offset by pixel
+	HL     offset by row
+	JK     offset by square
+	,.     adjust width
+	<>     half/double width
+	f      flip
+	m      mirror
+	-+     zoom
+	0-9    set bits