"*" when sorting msgs by threads

[Gilles CHAUVIN]

Hi all,

Just a little question. When I sort my mails by threads, some replies
appears with a "*>" instead of "->" in the pager.

I didn't find informations about this in the Mutt's doc.

Can someone tell me what does it means ?

Thanks in advance for your repl(y|ies)

Gilles.