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This is a link to navigation between dashboards from an similar question.
The reply from Joe Mako includes two useful links (Filter Action) and a tutorial video on advanced guided analytics - http://www.tableausoftware.com/learn/tutorials/on-demand/advanced-training-guided-analytics.
Hope this helps.
Thank you for your response. Yes the information to switch between dashboards does help with the specific example I provided.
Back to my main question, I think the answer is "No, Tableau does not have a procedural construct. It does have calculated fields using complex functions. All options available in Tableau are parameter based settings under different menu options."