Re: [tdwg-tag] Unresloved technical issues - proposed decisions.

...

comma is valid character in URLs.

...Only alphanumerics [0-9a-zA-Z], the special characters "$-_.+!*'()," [not including the quotes - ed], and reserved characters used for their reserved purposes may be used unencoded within a URL.

• from RFC 1738

Standard character to separate URL list elements would be the blank

Nice. Well spotted, thanks. +1