On a landing page for a PFX instance, you can use these parameters in links to different language versions:
locale– Sets the format of dates and numbers.uiLanguage– Sets the language of the application.
As a value for both parameters, use the ISO language code in lower case.
If uiLanguage is not explicitly mentioned, it is supposed to be the same as locale.
For example, the last link on the screenshot below looks like this: https://test.pricefx.eu/priceFxWeb.html?locale=de&uiLanguage=en#loginPage
It keeps the UI in English, while dates and numbers are formatted according to German.
