What is 'T' in the return value of Line Plane Intersection (Origin & Normal) node

The documentation states:

“The t of the intersection between the line and the plane”

What’s the use of this ‘t’?

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Was just playing around with this myself. It appears to be the distance from the start point to the point of intersection, as a fraction of the total line length. If you multiply this by the total length of the line passed to the Line Plane Intersection function, it give the actual distance between the points.

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