$GRAB的用法是怎样的?我看了例子还是不明白,请大虾解释一下下面的例子,$GRAB的那几个参数到底是什么意思呢?谢谢~ u#Qd`@p
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SYSTEM NEW DO$jX
4
RESET LEkO#F(
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EMITTING DISK Z 0 1 1 1000 T?c:z?j_9
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STATS POSITION 2, ` =i
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$GRAB 'Centroid:' 0 1 XCENT YCENT ZCENT yla&/K;|*
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$REG XCENT YCENT ZCENT W9T,1h5x
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RETURN