What you see in that block is what I call a double lookup. Here's how to make one: https://forums.autodesk.com/t5/dynamic-blocks/how-to-make-a-double-lookup/m-p/5785708
They are very useful. When the input values of one table are changed to match a different row, it triggers the double lookup to change the input properties of the other table to the values of the matching row on the other table.
If you look on the IN table you can see that it has Angle2 as input property. It also lists all of the increments of the Angle2 parameter as row values. Those row values match the 'Lookup Properties' row names on the right. If you open the OUT table you will see that it has the same Lookup Properties row names.
When Angle2 is switched to 90°, the double lookup will switch Angle1 to 90 degrees and Flip state 1 to not flipped. Etc... Make sense?
