Hi,

I can change the mark of the second footnote from "2" to asterix by
defining a conversion like so:

%-- Working example, but it is not what I need --
\setupindenting[yes,small]
\defineconversion[mymix][1,\m{*},2]
\setupnotation[footnote][align={hz,hanging},indenting={yes,small,next},numberconversion=mymix]

\startdocument
This is the first sentence with a footnote.\footnote{This is the first
footnote and its mark is "1".}
This is the second sentence with a footnote.\footnote{This is the second
footnote and its mark is "*". }
This is the third sentence with a footnote.\footnote{This is the third
footnote and its mark is "2". }
\stopdocument

Clearly this conversion repeats the marks "1", "*" and "2" repeatedly. Is
there a way to define a new/special footnote command (say, "\symfootnote")
which blends with normal footnotes, but prints footnotes with symbol marks
(say, Set 2) and not with numbers. In other words, is it possible to
achieve the same result as the working example above with something like
the (pseudo) example below?

%--  Pseudo example --

\setupindenting[yes,small]
\def\symfootenote ??????????
\setupnotation[symfootnote][align={hz,hanging},indenting={yes,small,next}]
\setupnotation[footnote][align={hz,hanging},indenting={yes,small,next}]

\startdocument
This is the first sentence with a footnote.\footnote{This is the first
footnote and its mark is "1".}
This is the second sentence with a footnote.\symfootnote{This is the second
footnote and its mark is "*". }
This is the third sentence with a footnote.\footnote{This is the third
footnote and its mark is "2". }
\stopdocument

Thank you.