How can i find out which difficultiy i'm playing?

[Xenon]

I haven't played in a few months (since I beat it), but I cant remember which difficulty I set for that game or if I was on ironman. Is there a way to find out? I looked all around in settings and the load screen, but I cant see it anywhere. I'd like to start a new one on the next difficulty or maybe try ironman if I didn't last time.
Thanks!

[Solarius Scorch]

Just open the save in a text editor and look for "difficulty", it ranges from 0 (Beginner) to 4 (Superhuman).

[The Reaver of Darkness]

It's much easier if you load the save file in Notepad++ and set the language to YAML. You can then press alt+0 to collapse all of the categories. Difficulty will be seen near the bottom of the save file.