Most of the parameters are described in the grid view object. The interface behaves a lot like the NetView editor.
Each population exported from the RatLab window is shown either as a grid of cells or as a connectivy matrix. Polulations are selected for export from RatLab by right-clicking (toggle action) on them in the RatLab network display.
To switch between a grid and connectivity matrix use the button to the lower left of each population.