Can't add more than one WWW tag info WMA file. Is it correct?

[kanda]

@Florian

As for support for WWW in ID3v2, it internally maps to WXXX which is defined as

There may be more than one "WXXX" frame in each tag, but only one with the same description.

Thank you for explaining. The entity ID3v2 frame is new for me: Mp3tag documentation does not mention it. Could you, please, clarify, how do ID3v2 frame, ID3v2 tag, and Mp3Tag field correspond to each other?

@Florian

In Mp3tag, such descriptions can be added as part of the field name, e.g,
WWW DESCRIPTION = Field contents

Well, but

1. most important, it looks like keeping data in custom tags, what looses web url semantic. Is WWW DESCRIPTION more web url than, say, WWW2 = https://... or ABC 1 = https://..., ABC2 = https://...?
2. The description is lower-case prohibited.
3. WWW DESCRIPTION tag(s) (frame(s)?) can not be mapped into file list column, because %www% does not catch them.

Curiously, I managed to get, only with Mp3tag and Windows Explorer, double WWW tag (frame?):

So multivalue WWW tag (frame) is technically possible. It gets alone again after changing any other tag, for example, YEAR:

Would it be more correct not to overwrite them?

@Florian

However, not all /WMA tags/ are supported by Mp3tag (e.g., the WM/UserWebURL field is a binary field that currently isn't)

Well, but single WWW tag is saved by Mp3tag. Which WMA attribute is used for that? This is not documented in Mp3Tag.