Sitecore is an incredibly good platform that provides a lot of functionality out of the box, but one of the great things about Sitecore is that if there is something custom that you'd like to add in, there's always a way to do it. I'm going to walk through the process of adding a custom piece of functionality to Sitecore's Rich Text Editor. There are a lot of reasons you would want to do this but for the sake of this example we'll build a simple text insertion demo that you can expand upon.
To start you'll need to create a button in the wysiwyg toolbar. You will need to switch over to the core
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