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console 命令行工具 X clear

                    
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console
<!DOCTYPE html>
<html>
	<head>
		<title></title>
	</head>
	<body>
		<svg style="width:5000px;height:5000px">
            <!-- <rect width="200px" height="100px" x="100" y="20" rx="100" ry="50" style="fill:blue;
            stroke:red;stroke-width:10;stroke-opacity:0.5;fill-opacity:0.5"/> -->
            <!-- <circle cx="100" cy="100" r="50" style="fill:blue;stroke:red;stroke-width:10"/> -->
            <!-- <rect width="100px" height="300px" x="100" y="30" rx="20"/>
            <circle cx="150" cy="100" r="30" style="fill:red"/>
            <circle cx="150" cy="190" r="30" style="fill:yellow"/>
            <circle cx="150" cy="280" r="30" style="fill:green"/> -->
            <!-- <ellipse cx="100" cy="100" rx="80" ry="40"/> -->
            <!-- <ellipse cx="300" cy="140" rx="200" ry="40"style="fill:red"/>
            <ellipse cx="270" cy="90" rx="170" ry="30"style="fill:yellow"/>
            <ellipse cx="250" cy="90" rx="150" ry="20"style="fill:green"/> -->
            <!-- <line x1="10" y1="10" x2="100" y2="100" style="stroke:red;stroke-width:1"/> -->
            <!-- <polygon points="20,20 40,40 80,8" style="fill:none;stroke:red;"/>
            <polyline points="25,50 100,40 80,8" style="fill:none;stroke:red;"/>             -->
            <!-- <polygon points="20,20 100,20 100,100" style="fill:none;stroke:red;"/>
            <polygon points="120,200 200,20 200,200" style="fill:none;stroke:red;"/> -->
            <!-- <polygon points="20,20 200,20 100,100" style="fill:none;stroke:red;"/> -->
            <!-- <polygon points="150,40 135,90 180,60 120,60 165,90" style="fill:none;stroke:red;"/> -->
            <!-- <text x="50" y="50" font-size="50px"style="full:red;stroke:blue" transform="translate(100,100)">2433</text>
            <rect width="200px" height="100px" x="100" y="20" style="fill:blue;
            stroke:red;stroke-width:10;" transform-origin="center" transform="scale(0.5)"/> -->
            <!-- <rect width="200px" height="100px" fill="red">
                <set attributeName="fill" to="blue" begin="click"/>
                <set attributeName="fill" to="yellow" begin="dblclick"/>
                <set attributeName="height" to="200px" begin="mousemove"/> -->
            <!-- </rect> -->
             <rect x="100" y="20" width="100px" height="10px"/>
             <rect x="100" y="30" width="100px" height="50px">
                 <set attributeName="fill" to="red" begin="mousemove"/> 
             </rect>
             
        </svg>
	</body>
</html>