'points, line = g.points, g.line',
			'rectangle, polygon = g.rectangle, g.polygon',

			'pt, line = g.points, g.line',
			'rect, poly = g.rectangle, g.polygon',

			'color, bgColor = g.setColor, g.setBackgroundColor',

			'color = g.setColor',
			'min, max = math.min, math.max',
			'abs, rand = math.abs, math.random',

		},
	},
	{
		name='circ',
		lines={
			'-- a snazzy circle',
			'cx, cy, N = 30, 100, 100',
			'function dist2(x1,y1, x2,y2)',
			'  return (x2-x1)^2 + (y2-y1)^2',
			'end',
			'',
			'function car.draw()',
			'  for x=cx-N,cx+N do',
			'    for y=cy-N,cy+N do',
			'      if dist2(cx,cy, x,y) < N*N then',
			'        color(abs(x-cx)/N, abs(y-cy)/N, 0.5)',
			'        pt(x,y)',
			'end end end end',
			'',
			'function car.mousepressed(x,y, b)',
			'  cx,cy = x,y',
			'end',
		},
	},
	{
		name='pacman',
		lines={
			'-- pacman',
			'function init_balls()',
			'  balls = {}',
			'  for x=50,love.graphics.getWidth()-1,50 do',
			'    for y=30,love.graphics.getHeight()-1,50 do',
			'       table.insert(balls, {x=x, y=y, show = true})',
			'end end end',
			'init_balls()',
			'',
			'function eat_ball()',
			'  for _,b in ipairs(balls) do',
			'    if b.x == x and b.y == y then',
			'      b.show = false',
			'end end end',
			'',
			'x, y = 30, 30',
			'dx = 5',
			'dang = 0 -- change in mouth angle',
			'',
			'function car.draw()',
			'  love.graphics.setColor(0.8, 0.8, 0)',
			"  love.graphics.arc('fill', x,y, 20, dang + 0.5, dang + 2*math.pi - 0.5)",
			'  for _,b in ipairs(balls) do',
			'    if b.show then',
			"      love.graphics.circle('fill', b.x, b.y, 10)",
			'end end end',
			'',
			'function car.update(dt)',
			'  x = x+dx',
			'  eat_ball()',
			'  if x > love.graphics.getWidth() then',
			'    y, dx = y+50, -5',
			'    dang = math.pi',
			'  elseif x < 0 then',
			'    y, dx = y+50, 5',
			'    dang = 0',
			'  end',
			'  if y > love.graphics.getHeight() then',
			'    y = 30',
			'    init_balls()',
			'  end',
			'end',
		},
	},
	{
		name='trails',
		lines={
			'-- sweep trails with your finger',
			'-- (fingers on a phone or tablet)',
			'W,H = g.getDimensions()',
			'T = 0.1  -- seconds',
			'U = 0',
			'',
			'trails = {}',
			'',
			'function car.draw()',
			'  for _,trail in pairs(trails) do',
			'    color(trail.r, trail.g,trail.b)',
			'    for _,c in ipairs(trail) do',
			"      circ('fill', c.x,c.y, c.r)",
			'end end end',
			'',
			'function car.update(dt)',
			'  U = U + dt',
			'  if U < T then return end',
			'  U = U - T',
			'  local touches = love.touch.getTouches()',
			'  for _,id in ipairs(touches) do',
			'    local x,y = love.touch.getPosition(id)',
			'    if trails[id] then',
			'      table.insert(trails[id], 1, {x=x, y=y, r=100})',
			'end end',
			'  for id,trail in pairs(trails) do',
			'    for i=#trail,1,-1 do',
			'      local c = trail[i]',
			'      c.r = c.r - 10',
			'      if c.r <= 0 then table.remove(trail, i) end',
			'    end',
			'    if #trail == 0 then trails[id] = nil end',
			'  end',
			'end',
			'',
			'function car.touchpressed(id, x,y, ...)',
			'  trails[id] = {r=rand(), g=rand(), b=rand()}',
			'end',