Sentence:  In some cases, coordination between the lighting and scene designer may result in a preliminary scenic <WSD>groundplan</WSD> that indicates not only all of the scenic and masking information, but temporary lighting positions as well. 
Meaning of the word marked with <WSD> tags:  A diagram showing the physical layout of a set, especially the placement of structures on the stage, as opposed to items on the walls or suspended from the ceiling.