As far as the Scripting Host is concerned, it's our own. This allows us to add new commands to the Host, which can then be used from within the scripts themselves (e.g wath.getvariable "MyVariable" ), just like WScript implements its own methods/commands/objects.
That also means WScript-specific commands are not available (since they are host-dependent).
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Technical Product Manager
I don't want to achieve immortality through my work; I want to achieve immortality through not dying - Woody Allen