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I am rather curious about this. I was wondering if you want to embed code from another service and have a reference to that service be displayed on your site, how exactly would you do it? I would think that it simply involves typing in straight HTML into the text editor when adding a page, but what if it is just a button at the bottom of one of your existing pages you want, and it would be quite silly to create a page just to contain a simple button, would it not? I know that this is possible for you guys do it with video encoding, so any feedback would be awesome.