Encoding of ancestral populations in the output file

[xiaoxiaoerbao]

Hi:
I had a problem with the encoding of ancestral populations in the output file
Here is my command
{loter_cli -r ceu.vcf yri.vcf -a mex.vcf -f vcf -o tmp_ceu_yri.txt -n 8}
I want to know if the 0 in file tmp_ceu_yri.txt corresponds to the reference population CEU and one corresponding to YRI.
And if {loter_cli -r yri.vcf ceu.vcf -a mex.vcf -f vcf -o tmp_yri_ceu.txt -n 8}, then
0 in file tmp_yri_ceu.txt corresponds to the reference population YRI and one corresponding to CEU.