You will find a button "translate this message (and the strings in the simulation) into your local language.
Just click that button and you will find editable area for you to translate that posted message into your local language.
You will also find a table to translate strings used in the simulation.
Just edit that page and submit your result.
And you will received translated result in your email box after you post the translated data and click download button.
Please try it and you will find out it can be done easily.

"Click red switch to start" was not included in the translation. I will need to modify the code to add that one.
Do you really need it?