$ranges

This is to set up the range of the rectangular regions. There are four columns for each region to fill in x start point left x end point right y start point top y end point bottom. $Unit:{\mu}m$

Example

$ranges
-0.1 10.0
20.0 15.0
-0.1 10.0
15.0 0.0

This means that there are two rectangular regions. the first region covers the area which x starts from -0.1 um to 10.0 um and y starts from 15.0 um to 20.0 um. the second region covers the area which x starts from -0.1 um to 10.0 um and y starts from 0.0 um to 15.0 um.