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GfsOutputStreamline writes points along the streamline through a point in a given flow-field; i.e. the curve parallel to the instantaneous velocity field all along its length.

The syntax in parameter files is:

[ GfsOutputScalar ] X Y Z

where X, Y, and Z are the coordinates of the point defining the streamline.

The output format is:

 GfsStreamline N
 X1 Y1 Z1 Q1
 X2 Y2 Z2 Q2
 Xn Yn Zn Qn

Here N is the number of points along the streamline as described in the following N lines in terms of four numbers, the first three of which are the Cartesian coordinates.

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