Changes
added variables valid for 64-bit Windows
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| '''PROCESSOR_ARCHITECTURE''' || System returns the processor's chip architecture. Values: x86, IA64, AMD64.
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| '''PROCESSOR_ARCHITEW6432''' || System returns the processor's chip architecture, if running a 32-bit application on Windows 64-bit. Values: IA64, AMD64.
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| '''PROCESSOR_IDENTFIER''' || System returns a description of the processor.
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| '''PROGRAMFILES(x86)''' || Returns the location of the Program Files directory for 32-bit applications on Windows 64-bit.
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| '''PROGRAMW6432''' || Returns the location of the Program Files directory for 64-bit applications on Windows 64-bit, if running a 32-bit application.
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| '''PROMPT''' || Local returns the command-prompt settings for the current interpreter. Cmd.exe generates this variable.