What is the Langmore protocol fee?

Could you please elaborate on what the Langmore protocol fee entails? I'm curious to understand if it's a fixed cost, or if it varies depending on certain factors. Additionally, how does this fee contribute to the overall functioning and security of the Langmore protocol? I'm interested in knowing the specific purpose it serves within the ecosystem. Lastly, is there a transparent way to calculate or predict the amount of this fee? I'd appreciate your insights on this matter.