How does assigning RSID (dbsnp IDs) work when there are multiple variants at the same line? For example, if the genotype is 1/2, and of of these variants have a distinct RSID, would they both be assigned, separated by comma? And what about multi-sample VCFs, is the situation the same (e.g. 0/1 and 0/2)? Are there any limitations or recommendations on this?