Introduction of Bionano whole genome maps by NCBI:
https://www.ncbi.nlm.nih.gov/genbank/bionanomaps/
Detailed file format specifications can be found on:
https://github.com/bionanogenomics/File-Format-Specification-Sheets
NCBI FTP for public map files:
ftp://ftp.ncbi.nlm.nih.gov/pub/supplementary_data/bionanomaps.csv