// "Contrail" by Andy

Aspc=1,

A0="rnd( 2 * PI )",      // Random angle
A1="rnd( .028 ) + .002", // Random flow rate
A2="a1 * sin( a0 )",     // x component
A3="a1 * cos( a0 )",     // y component

srcX="x + a3",
srcY="y + a2",

Vers=100