Is a scalar default character variable.
On Windows* systems, this variable is assigned one of the following values:
'DENYRW'
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If the file is connected for deny-read/write mode
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'DENYWR'
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If the file is connected for deny-write mode
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'DENYRD'
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If the file is connected for deny-read mode
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'DENYNONE'
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If the file is connected for deny-none mode
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'UNKNOWN'
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If the file or unit is not connected
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On Linux* and Mac OS* X systems, this variable is assigned one of the following values:
'DENYRW'
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If the file is connected for exclusive access
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'DENYNONE'
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If the file is connected for shared access
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'NODENY'
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If the file is connected with default locking
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'UNKNOWN'
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If the file or unit is not connected
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