[wix-users] Extensibility

[Szentpáli, János]

Hello,

I would like to be able to define/use a custom attribute of the Feature
element; e.g.

<Feature
    atr1="Some data"
...

As far as I could figure out, you need to create an extension to enable
this.
I have seen/studied guides/tutorials on the net, but those talk about
adding custom elements, not extending predefined ones.
I don't need this attribute to influence the resulting MSI in any way,
its purpose wold be purely administrative.
Is this possible?
Any pointers as to how to achieve it?

Regards,
János