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  • Chris Kang thinks this is interesting:

For components, use a dollar sign ($). For example, the following statement checks if the feature that has an ID of MainFeature is set to be installed locally:

From

Cover of WiX 3.6: A Developer's Guide to Windows Installer XML

Note

Does "= 3" translate into Local install? Need to find the table that maps these number to a state.... see the table below.