Passing an argument from a block to a page with Views 6

Posting an old and embarrassing note, but this may help other hapless googlers find that the answer is right at home in their Views user interface.

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apologies for a question that feels like support, but it is either too advanced or too simple to be documented anywhere. We have a block view that shows

where can one put custom code to run even if an argument is provided -- code to modify/transform an argument, not just provide a default if none is present?

http://views-help.doc.logrus.com/help/views/argument

http://views.doc.logrus.com/

where can one put custom code to run even if an argument is provided -- code to modify/transform an argument, not just provide a default if none is present?  In Views 1 the whole view could be messed with in the arguments handling, but in Views 2 if the default argument is there no custom code runs...  that I can find.

Checking for quick brain-check here before looking to do it in the API.

Resolution

This is done automatically.

As long as you have enough content in the block to trigger a more link, it will make a more link with the information necessary to pass on variables to the page display of the same view (so you must have both a block and a page display).