<?xml version="1.0"?>

<system name="particles">

  <channel>
     <switch name="contrail test">
          <default value="0"/>
          <test value="1">
                /ai/submodels/contrails == 1
          </test>
          <output>/sim/multiplay/generic/int[5]</output>
     </switch>
  </channel>

  <channel>
     <switch name="vortex test">
          <default value="0"/>
          <test value="1">
                aero/alpha-rad gt 0.1573
                velocities/mach gt 0.1
          </test>
          <output>/sim/multiplay/generic/int[4]</output>
     </switch>
  </channel>

</system>
