This example solves Laplaces equation on a 6 region 2d slice though the torso at the mid-sternum level. A finite element heart is defined in region 7. Heart geometry (and fibre angle for region 7) are from an x=0 slice though the 3d prolate heart which has been rotated and then scaled up by 1.3x in each direction to fit into the human torso model. An x2-y2 essential boundary condition is applied to the torso surface. Two other subproblems containing only a subset of the regions are solved. The normal direction is reversed on the RV septal wall to keep consistent xi directions.