How can i define a new output parameter?

[zhemu26]

Dear WW3 community.
Recently, I encountered an issue while using WW3. I need to output the integrated value of the wave-bottom term (Sbot), but I found that this source term can only be output at specific points. To obtain the integral, I would have to use MATLAB afterward. However, this approach is impractical when I need the integrated value of the source term over the entire grid area.

I noticed that WW3 allows for custom output parameters, and I would like to know how to output the integrated value of the Sbot source term as a parameter. This way, I could easily use ww3_ounf to output the integral of the Sbot term for the entire field.

Thank you for your support.