I want to understand what meffil.snp.concordance does

As it mentioned above (image),

if I run meffil.snp.concordance, it will return two vectors.

1. providing concordances between genotypes and SNP betas for matched samples

2. providing concordances between genotypes and SNP betas for matched SNPs

I have four questions about meffil.snp.concordance

(1) What is the purpose of the 'snp.threshold' parameter in 'meffil.snp.concordance'?

(2) Can you explain the significance of the 'sample.threshold' parameter in the context of 'meffil.snp.concordance'?

(3) Could you provide a precise definition of the statement "providing concordances between genotypes and SNP betas for matched samples"?

(4) Similarly, could you clarify the meaning of "providing concordances between genotypes and SNP betas for matched SNPs" in the output of 'meffil.snp.concordance'?

I have searched about it, yet I have not found definitive explanations for these inquiries

Thank you in advance.