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hello, when i open IHP example it shows this. How to fix this please? <@U016EM8L91B> <@U0172QZ342D> <@U0169AQ41L6>

Add a file `xschemrc` to your working directory with the contents
```# Source the PDK xschemrc file
if {![info exists PDK]} {
    source $env(PDK_ROOT)/$env(PDK)/libs.tech/xschem/xschemrc
}

# Add current directory to xschem library path
append XSCHEM_LIBRARY_PATH :[file dirname [info script]]```
set environment variables PDK_ROOT and PDK to point to the location of the IHP open PDK and the name "ihp-sg13g2", respectively.

thanks, im new to this is there any step by step manual please?

It also throws error for classical devices in xschem