Cool idea. For this to be really useful, it needs to be able to define a snippit (e.g. a function), and then let the user type his own code (e.g. an applicatio

Cool idea. For this to be really useful, it needs to be able to define a snippit (e.g. a function), and then let the user type his own code (e.g. an application of that function) to see the results. Otherwise, if everything is static on the page, you could just pre-calculate the results when building the page.