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isdir - tests if a file is a directory
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Calling Sequence
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isdir(filename)
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Parameters
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filename
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name of the file to be checked
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Description
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If filename is a directory, isdir returns true. If it is not a directory, isdir returns false.
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If filename does not exist, isdir generates an error.
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See file for information on file names.
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Examples
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>
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>
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>
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Error, (in isdir) file or directory does not exist
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