The language used for writing test scripts in Selenium IDE is called Selenese. It is a set of commands used to test your web application or system. Selenium commands could be divided into 3 major categories:
Actions : These are the commands interacting directly with web applications.
Accessors : These are the commands which allow users to store values to a user-defined variable.
Assertions : They enable a comparison of the current state of the application with its expected state.
