Multiple same-name field export

Is there an official documented way of exporting multiple fields of a single given name? E.g. multiple ARTIST fields as here:

For some unfathomable reason, %artist% returns only one of the fields.

Thanks.

$meta(artist)

In the manual at -> http://help.mp3tag.de/main_scripting.html#metadata

Thanks. The safest of those forms seems to be:

$meta_sep(artist,    ))

using TAB as the separator. I am hoping TAB is disallowed in a field value.

EDIT: Oops, this forum converted the TAB to spaces. FTR, between "," and ")" was TAB, no spaces.

And I note it is essential to omit the usual '%' on %artist%.