The "snp" command works with only 1 snp, but if I type 2 SNPs, it does not, as from output below. VCF tools manual says snp <string> but how do I write the string of several SNPs? rs236330rs236330 or rs236330-rs236330?

I tried the command "snps" to include a list of SNPs from a file but it doesn't recognize the command

```
--vcf ALL.chr1.phase3_shapeit2_mvncall_integrated_v5.20130502.genotypes.vcf
    --chr 1
    --freq
    --out chr1_analysis
    --snp rs236330-rs236322

After filtering, kept 2504 out of 2504 Individuals
Outputting Frequency Statistics...
After filtering, kept 0 out of a possible 6468094 Sites
No data left for analysis!
```
I believe you can simply use `--snp` multiple times, one for each snp. Alternatively, you can read from a file using `--snps`.