Hello fellow foundry fanatics™,

I have noticed that several foundry authors use small icons in their signature images to give information about their projects. For example, which level the mission is intended for, the faction, space or ground combat, story or combat focus, and so on...

The symbols are white squares with black images and lettering.

Does anyone know where they come from and whether they're free to use? I think they're quite pretty, but neither forum nor google searches have yielded any results.

Would love you to death if you could help me out.