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\usage{
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\usage{
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grobX(x, theta)
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grobX(x, theta)
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grobY(x, theta)
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grobY(x, theta)
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}
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}
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\arguments{
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\arguments{
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  \item{x}{A grob, or gList, or gTree, or gPath.}
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  \item{x}{A grob, or \I{gList}, or \I{gTree}, or \I{gPath}.}
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  \item{theta}{An angle indicating where the location is
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  \item{theta}{An angle indicating where the location is
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    on the grob boundary.  Can be one of \code{"east"},
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    on the grob boundary.  Can be one of \code{"east"},
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    \code{"north"}, \code{"west"}, or \code{"south"},
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    \code{"north"}, \code{"west"}, or \code{"south"},
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    which correspond to angles 0, 90, 180, and 270,
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    which correspond to angles 0, 90, 180, and 270,
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    respectively.}
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    respectively.}