Helptext: Known recipes are written in your "Recipe Log"

The text says:

Known recipes are written in your "Recipe Log", and can be accessed by pressing the 'R' key. As you discover new combinations of items to craft, they will appear in the "Recipe Log".​

Seems like, outside combat, R isn't bound to anything for me. I'm also not sure what the relationship is between this and the "Crafting Journal, which can be accessed by tapping the 'B' key", for which there was a message a minute or so before.