I don't understand the definition of $\boldsymbol{\Omega}_A$ in the context of almost rings. In Gabber and Romero https://arxiv.org/pdf/math/0409584.pdf it is covered in 9.6.12. How is $\boldsymbol{\Omega}_A$ defined? What is the difference to the usual Kähler module? I'm really sorry, but I'm lost.