The BED files, at least as viewed from [hg38](https://bismap.hoffmanlab.org/raw/hg38/) contain a trackline header which is technically not a valid BED file. e.g. `track name="Umap S36" description="Single-read mappability with 36-mers" colors=40,10,220`
The BED files, at least as viewed from hg38 contain a trackline header which is technically not a valid BED file.
e.g.
track name="Umap S36" description="Single-read mappability with 36-mers" colors=40,10,220