Scratchpad is a notepad with autosave, sync, file export, and themes. Moreover, your changes will be saved about 2 seconds after your last edit. However,  it may take a couple of minutes to complete the synching process and is not designed to enable simultaneous editing on multiple computers.

It is possible to add section headings, using the button on the left side of the title bar.

When you save, a preview of the result will appear in the status bar. You can open a saved file in Scratchpad by selecting "Open in Scratchpad".