First, go to http://hardwax.com and select a page that you want to autoplay. Then, open the menu and you will see four flow controls:
Run Starts autoplaying. This will continue until all the previews on the page have been played unless no other action from the menu is taken. When the script is running, you can select any preview and the autoplay will continue from that position.
Stop Interrupts the autoplay and resets all values. This means that the autoplay will start from the first preview on the page the next time Run is triggered.
Pause Pauses the autoplay and prepares for resuming at the position where it was paused.
Resume Resumes the autoplay from the position where it was paused, and continues until all the previews on the page have been played unless no other action from the menu is taken.
