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====== DistancePointLine ======
DistancePointLine(<-point <-startLine <-endLine) ->dist

===== Description =====
Returns the shortest distance between a point and a line.
The point, startLine, and endLine are treated as Vector3.

===== Examples =====
<code 4rpl>
DistancePointLine(V3(1 0 1) V3(0 0 0) V3(2 0 2)) ->dist
trace(<-dist)
</code>