Not Quite PRINCE2 because you can't just take products of PRINCE2 and use them in isolation away from the whole method. However, if one is building a business case tool wizard, then why would one not use the PRINCE2 product description to inform the design?
When you have collected all your information together, complete the form on screen, then press Submit. The script will create a web page at http://lmsfarm.co.nz/biz/yourname/filename.html which you can view, store for later, or copy paste into some other document.
PROTOTYPE ONLY — NOT YET OPERATIONAL