Returns the scale of the layer that is connected to h.

GetLScale(h : Handle) : REAL;

Returns the number of selected objects on the layer that is connected to h.

NumSObjs(h : Handle) : INTEGER;

Returns the number of objects on the layer that is connected to h.

NumObj(h : Handle) : INTEGER;

Returns the visibility of the layer that is connected to LayerHandle.
0 = Normal, 1 = Grayed, 2 = Invisible

GetLVis(LayerHandle : HANDLE) : INTEGER;

Returns the layer name that is connected to LayerHandle

GetLName(LayerHandle : HANDLE) : STRING;