"Finally we’re inserting the image markdown tags into the page using the insertAtCaret() function. This too is a custom jQuery plugin called jquery.insert.js. I

"Finally we’re inserting the image markdown tags into the page using the insertAtCaret() function. This too is a custom jQuery plugin called jquery.insert.js. It’ll make sure that any text inserted is placed after the blinking caret." Looks like it shows up wherever your cursor is