CID Parameters are just one example of a parameter you can use to track your marketing activities. What is unique about Adobe Analytics, is the platform doesn't track utm source, medium or campaign as you might be use too. A single string value preferred and is much more flexible than restraining to defined utm parameters...
Here are a few articles on how Adobe Classifications and Groupings work (aka SAINT)
https://webanalyticsfordevelopers.com/2013/05/21/saint-classifications/ https://blog.adobe.com/en/publish/2013/05/22/revisiting-a-sitecatalyst-classic-classification-saint-fundamentals-saint.html
That said, if you're looking to break this up into hidden form fields, there are a few way to do this with JS. If you're looking to parse this out, you can do this as Stanford notes, via workflow or ETL process or more simply through an Excel formula.
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