The Track Isolation function is used to construct a set of outlines around the tracks and pads on a PCB file, thus isolating them from one another, and from the remaining sea of copper on the blank board. Optionally, you may also construct a set of flood lines to clear out these areas of unwanted copper.
When you select this function, a dialog box will appear which will display the current isolation parameters at which time you will be able to enter new values.
Once isolated and checked for correctness, the PCB data may then be converted to mill, drill, and route files by using the Isolation Output function.
A containment block must be defined in the current data file before this function can be used.