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This content is no longer actively maintained. It is provided as is, for anyone who may still be using these technologies, with no warranties or claims of accuracy with regard to the most recent product version or service release.


An expression that can be evaluated as either true (nonzero) or false (0). You can use the keywords True and False to supply the values of 1 and 0, respectively. The field data type Yes/No is Boolean and has the value of 1 for Yes and 0 for No.

Several property sheet settings are Boolean, including Yes/No, True/False, and On/Off.

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