Filter Fill/Stroke will target all paths with the same fill color or stroke color selected. This is a powerful tool for creating your SVG as it allows you to do many operations in a single file.
Example #1 demonstrates the Filter Fill capability for targeting specific paths in the SVG based on the color fill. You can also use Filter Stroke to filter on the stroke color.
The yellow fill on the circle is targeted for a lower power and faster feed engraving operation while the red filled diamond is targeted for a high power cut.
A disclaimer about the settings shown in this tutorial. Every machines settings will vary based on the laser power and speed capability of your machine. The values used in this example are for a K40 style 40w CO2 laser with upgraded optics and air assist. Proceed with caution.