[Users] Actions: move entire thread

[nvx .]

Moving the selected message to a specific folder via a user action can
simply be done via "%as{move FOLDER}". Can I do the same thing
also for entire threads? If so, what operator do I use instead of "%as"?

Additionally, is there a _complete_ list of the available "%" operators
somewhere? I tried to find it but failed -- none of the partial lists I
encountered mentioned even the "%as". :(

Thanks.