What is ';Gneissic Texture';?

Gneissic Texture This is a coarsely foliated texture in which the minerals have been segregated into discontinuous hands, each of which is dominated by one or two minerals.What is ';Gneissic Texture';?
The old professor says: Gneiss is a metamorphosed granite in which the mineral grains have been flattened to a foliate or leaf-like structure. They often appear as bands across the rock. Texture is one of the key identifiers for petrologists in the identification of rock. Commonly the bands or micaceous looking fragments will be black, white, or pink. The rock commonly breaks along these planes of weakness in a hackley fashion.