Microsoft Scripting Runtime
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    IOMode Enumeration
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    Description
    Indicates input/output mode. Can be one of three constants: ForReading, ForWriting, or ForAppending.
    Members
    MemberValueDescription
    ForAppending8Open a file and write to the end of the file.
    ForReading1Open a file for reading only. You can't write to this file.
    ForWriting2Open a file for writing. If a file with the same name exists, its previous contents are overwritten.