How to Use LAYERS to your Advantage! (clipping masks, alpha lock, layer modes) Posted: April 21, 2025 | Last updated: April 21, 2025 Winged Canvas is an online school for illustration and a ...

OPC makes use of tiny shapes, or sub-resolution assist features (SRAFs). The SRAFs are placed on the mask, which modifies the mask patterns to improve the printability on the wafer. At 20nm, though, ...