It's not so. Both CSV (despite of its name) and DSV are able to use an arbitrary character as a delimiter. The real difference between them is the way to escape

It's not so. Both CSV (despite of its name) and DSV are able to use an arbitrary character as a delimiter. The real difference between them is the way to escape the delimiter (and to escape the escaper itself). DSV use C-like syntax: \, will be treated as literal comma, \\ will be treated as literal backslash. CSV use quotation marks for this purpose, and in a completely different way.