Grace 0.18µm uLL 1.8V/10V dual gate CMOS process

Data   Purpose
type
  0    drawing
  5    pin (for APR)
241    blockage

For instance, ordinary M1 pattern is with layer No. 31, data type 0, while M1 text is with layer No. 131, data type 0.  M1 dummy pattern is with layer No. 231, data type 0

Layer Layer   Data   Purpose
name    No.   type  
M1      31       0   drawing
M1     131       0   text (labe)
M1     231       0   dummy
M1      31     241   APR blockage
M1      31       5   APR pin