GGU-SLAB: "Distributed loads" menu item

Certain FEM elements can be assigned distributed loads by defining the area required as a polygon using 4 counter-clockwise points. You will then see the following dialog box:

You enter two separate values because of the differentiation between permanent and changeable surcharges: Distributed load (G) for the permanent portion and Distributed load (Q) for the changeable portion. Both values are added separately when using the "Add distributed load" option.