FAQ

Where do we live?

Determining a function's home folder (that it was loaded from) is a popular question in times of text-based code. Selenium needs to answer it so that it knows where to look for its settings file (settings.json5).

Because Selenium can be brought into the WS in a variety of ways (recommended: using Tatin) it tries to handle this using several alternative techniques:

• look for an environment variable SELENIUM_HOME
• use 50[⎕ATX](https://docs.dyalog.com/20.0/language-reference-guide/system-functions/atx/)
• look for a SALT_Data namespace in the Selenium ns (as ]Load would create)

If one of these approaches gives us a valid path, it is assigned to the variable SELENIUM_HOME which is used to answer the question the next time it is asked. Therefore, depending on the setup in which you use Selenium, you can also initialise Selenium.SELENIUM_HOME with the path to settings.json5 or rely on Tatin or Link and not worry about it all.

Hint

Please note that SELENIUM_HOME points to Selenium's base folder (the folder that contains the APLSource directory with the individual functions.)