In modern software nothing seems more obvious that the possibility to Load and Save files. Real IES suffered from a goofy and uncommon user interface to browse the files before parsing their content. this is why in the process of restyling Real IES 3 UI, we decided to opt for a conventional yet more understandable system form.
And this is how it looks on Windows. Also Real IES 3 will adapt the UI on Mac (actually, to be precise, the software picks the path from the System Form, so the merit goes to Microsoft and Apple).