Use this page to generate exports for use on your own site. If you want a programmatic way to read the data, I recommend getting json data for a set via /api/sets/[set_id]
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These are imperfect tools. It's particularly inefficient when you're trying to export large amounts of data. To get around this I've built a completely new API. It's a work in progress, but to get BETA access to that get in touch.