In the process of creating the blogging software that powers my personal site, I found myself wanting a textarea that was a bit more friendly toward the Markdown syntax I was using for my posts' bodies- specifically, the ability to tab-indent content, and copy a line's indentation to the next line. The textarea below has been modified with a simple helper function that attaches to the key handler, and overrides the Tab and Return keys to provide a better experience when authoring post markup.