Loadero uses Selenium Nightwatch to handle participant action simulation. Nightwatch offers a lot of its commands to handle interaction with the browser.
Nightwatch (v2.5.2) built-in command documentation can be found here.
In addition to built-in Nightwatch commands, Loadero team is working on implementing additional custom commands to accomplish other tasks that would not be possible otherwise.
Available third party libraries
Additional libraries are installed and available in the script: