Setting focus to text entry box in Storyline

This thread is somewhat old and although it was helpful to know that placing  a text entry box at the bottom of the timeline automatically sets the focus to that text box, this only works with the previewer and in Flash. It does not work when using the HTML5 output. Very annoying since so many are moving away from Flash. The HTML5 operation should be as far as reasonably possible identical to the Flash, but it is not. Even some of the spacing is different so I am finding I have to choose either Flash or HTML5 to get it to look right. 

I have decided to focus on the HTML5 output, but would really like the automatic focus with blinking cursor. I'm basically emulating a Windows command prompt and students shouldn't have to click in the box before beginning to type commands. If anyone knows how to get the automatic focus with HTML, I'd love to hear the solution.