<span></span><p dir="ltr" style="line-height:1.8;margin-top:0pt;margin-bottom:0pt;margin-left:21.3071pt;text-indent:14.25pt;text-align:justify;"> </p> <div dir="ltr" style="margin-left:21.3071pt;"> <table style="border:none;border-collapse:collapse;width:481.89pt;"><colgroup><col width="*"></colgroup><tbody><tr style="height:0pt;"><td style="border-width:1pt;border-style:solid;border-color:#000000;vertical-align:top;padding:5pt;"> <h5 dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;color:#000088;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">int</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;"> led </span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">=</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;"> </span><span style="font-size:12pt;font-family:Consolas;color:#006666;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">13;</span></h5> <h5 dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;color:#000088;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">void</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;"> setup</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">()</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;"> {</span></h5> <h5 dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;"> pinMode</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">(</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">led</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">,</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;"> OUTPUT</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">);</span></h5> <h5 dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">}</span></h5> <h5 dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;color:#000088;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">void</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;"> loop</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">()</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;"> {</span></h5> <h5 dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;"> digitalWrite</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">(</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">led</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">,</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;"> HIGH</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">);</span></h5> <h5 dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;"> delay</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">(</span><span style="font-size:12pt;font-family:Consolas;color:#006666;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">1000</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">);</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;"> </span><span style="font-size:12pt;font-family:Consolas;color:#880000;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">// wait for a second</span></h5> <h5 dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;"> digitalWrite</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">(</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">led</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">,</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;"> LOW</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">);</span></h5> <h5 dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;"> delay</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">(</span><span style="font-size:12pt;font-family:Consolas;color:#006666;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">1000</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">);</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;"> </span><span style="font-size:12pt;font-family:Consolas;color:#880000;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">// wait for a second</span></h5> <h5 dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;background-color:transparent;font-weight:400;vertical-align:baseline;white-space:pre-wrap;">}</span></h5></td></tr></tbody></table><br></div> <div dir="ltr" style="margin-left:21.3071pt;"><span> </span><p dir="ltr" style="line-height:1.8;margin-top:0pt;margin-bottom:0pt;margin-left:21.3071pt;text-indent:14.25pt;text-align:justify;"> </p> <div dir="ltr" style="margin-left:21.3071pt;"> <table style="border:none;border-collapse:collapse;width:481.89pt;"><colgroup><col width="*"></colgroup><tbody><tr style="height:0pt;"><td style="border-width:1pt;border-style:solid;border-color:#000000;vertical-align:top;padding:5pt;"> <p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;color:#880000;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">#define</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> RED </span><span style="font-size:12pt;font-family:Consolas;color:#006666;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">7</span></p> <p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;color:#880000;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">#define</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> YELLOW </span><span style="font-size:12pt;font-family:Consolas;color:#006666;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">6</span></p> <p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;color:#880000;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">#define</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> GREEN </span><span style="font-size:12pt;font-family:Consolas;color:#006666;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">5</span></p> <p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> </span></p> <p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;color:#000088;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">void</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> setup</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">()</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> {</span></p> <p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> pinMode</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">(</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">RED</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">,</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> OUTPUT</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">);</span></p> <p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> pinMode</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">(</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">YELLOW</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">,</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> OUTPUT</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">);</span></p> <p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> pinMode</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">(</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">GREEN</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">,</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> OUTPUT</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">);</span></p> <p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">}</span></p> <p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> </span></p> <p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;color:#000088;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">void</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> loop</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">()</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> {</span></p> <p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> digitalWrite</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">(</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">RED</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">,</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> HIGH</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">);</span></p> <p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> digitalWrite</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">(</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">YELLOW</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">,</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> HIGH</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">);</span></p> <p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> digitalWrite</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">(</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">GREEN</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">,</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> HIGH</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">);</span></p> <p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> delay</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">(</span><span style="font-size:12pt;font-family:Consolas;color:#006666;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">500</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">);</span></p> <p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> digitalWrite</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">(</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">RED</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">,</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> LOW</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">);</span></p> <p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> digitalWrite</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">(</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">YELLOW</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">,</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> LOW</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">);</span></p> <p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> digitalWrite</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">(</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">GREEN</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">,</span><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> LOW</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">);</span></p> <p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;"> delay</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">(</span><span style="font-size:12pt;font-family:Consolas;color:#006666;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">500</span><span style="font-size:12pt;font-family:Consolas;color:#666600;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">);</span></p> <p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt;text-align:justify;"><span style="font-size:12pt;font-family:Consolas;background-color:transparent;vertical-align:baseline;white-space:pre-wrap;">}</span></p></td></tr></tbody></table><br></div> <div dir="ltr" style="margin-left:21.3071pt;"><br></div> <div dir="ltr" style="margin-left:21.3071pt;"><br></div> <div dir="ltr" style="margin-left:21.3071pt;"><br></div> <div dir="ltr" style="margin-left:21.3071pt;">이거 위에는 아두이노 내장LED 껏다키는 유명한 Blink 예제 코드이구요,</div> <div dir="ltr" style="margin-left:21.3071pt;">밑에는 외장 led를 켜는 코드입니다</div> <div dir="ltr" style="margin-left:21.3071pt;"><br></div> <div dir="ltr" style="margin-left:21.3071pt;">저기 첫번째코드에서는 int led = 13으로 변수선언을 했는데</div> <div dir="ltr" style="margin-left:21.3071pt;">왜 두번째에선 #define을 쓰는거에요?</div> <div dir="ltr" style="margin-left:21.3071pt;"><br></div> <div dir="ltr" style="margin-left:21.3071pt;">똑같이 int red = 7 뭐 이렇게 해도되는거아닌가요?</div></div>
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