How to use GFN1(Si)-xTB?

[lizhiq16]

Since GFN1(Si)-xTB parameterization shows higher accuracy, how to use GFN1(Si)-xTB? Is the GFN1(Si)-xTB parameter called by default when --gfn 1 is used?

[lizhiq16]

I think I found the solution as documented in H0 Tuning of the manual.
Place the parameter file (param_gfn1-si-xtb.txt from $XTBPATH/share/xtb) in the working directory and run xtb with:
xtb coord --vparam param_gfn1-si-xtb.txt