There are several preset paths on which to grow ice patterns on. You can select a path from the Mask kind list.
You can modify path parameters in parameters group Path. The parameter Density makes ice patterns more or less thick. This parameter changes the interval between frozen elements along the path. The Interval dependence parameter varies the shape distortion of ice patterns depending on paths segment length.
The Completeness parameter allows to grow up a frost pattern only on part of a path. The Completeness distance sets how ice elements will be changing during the growing up process.