The first time i heard of this node was here
What type of Geometry does this node eat?
-PointCloud data?
SAT (Standard ACIS Text) is the same as SAB (Standard ACIS Binary), but written in binary format instead of text format. More info on that here: http://paulbourke.net/dataformats/sat/sat.pdf
If memory serves it should take anything the SAT node can take, but with a reduced file size and increased performance as binary data is faster to interpret (at the expense of no longer being human readable).
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