$fixedsurftype
出自 DDCC TCAD TOOL Manual
$fixedsurftype is coming after $fixedsurface. The format is :
$fixedsurftype type_surface_1 type_surface_2 type_surface_3 .... type_surface_N
The default type is 0
Type 0 : Fixed point in x y z type 1 : Fixed point in x direction type 2 : Fixed point in y direction type 3 : Fixed point in z direction type 12 : Fixed point in xy direction type 13 : Fixed point in xz direction type 23 : Fixed point in yz direction