There are several "variables" for the space-keys, I can use in some macros (e.g. @all or @personal).
What I am looking for is a variable for the favourite spaces.
I tried @favourite in the "activity stream"-macro to let it show the updates from the favourite spaces by default - but it did not work ...
Is there any possibility like that?
So there is a special space-key variable for favorite spaces, see more about that here: https://confluence.atlassian.com/display/DOC/_Special+Values+for+Space+Macro+Parameter
But it appears to be for that specific macro, or at least not for the Activity Stream macro.
However you can customize that macro to include filters for specific projects.
Without more information about your use case that's probably the best advice I can offer.
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