This optional attributes gives a direction to a test.
The direction can be in 'global' coordinates, so with all (cell) data flattened onto the final chip locations, where [x=0,y=0,angle=0] is the design area relative to the foundry wafer (1:1 projection) or reticle placement (stepper projection).
Or it can be relative to the 'direction of the light' - so assuming the signal/light goes through the waveguide / building block in a normal 'signal' way.


This element is simple - it does not have attributes or elements. The text that fills up the ... is value used.

<direction> ... </direction>


The schema file can be downloaded or viewed at xPDK_Layout.