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The route has been planned, changed, argued over, compromised and hammered out over many years.

Video game performers and producers have hammered out a tentative contract agreement, reaching terms that could end a nearly year-long strike over artificial intelligence.

The youth mobility scheme could deliver significant gains, depending on the details that are hammered out, as could the mutual recognition of professional qualifications.

And even then, agreements in principle will leave many details to be hammered out in the weeks and months to come.

It is going to be critical to hammer out every one of these issues if the bill is to become law.