Also good questions shouldn't need explanations for the reason you're trying to do something. It's not like I'm going to explain my business requirements on a public forum to complete strangers.
And I'm going to mention this again — if the purpose of SO is to provide a searchable database of questions and answers, then the answer has to match the question, not a supposed use case that the user may or may not have, because that answer is then useless to others.
Of course you can include 500 MB in a separate file and read that. It's totally uninteresting and now that SO question, along with its non-answer is showing up in search results, having precedence over others. Which is a pity, because I thought SO is a place where you can ask questions on obscure features of the tools we're using.