pattern modifier to select current message in pager?

[N.J. Thomas]

If I am in a folder and I am currently on some message (eg. #702), I'm
looking for a pattern to delete all previous message, up to and
including the selected message.

I can do this manually by running "D" with the pattern "~m -702" (I had
to type in the number of the currently selected message).

But if I want to do this for any message I am on (so I can alias
this), I didn't see any pattern modifier in the manual that allowed me
to do this.

Is this possible?

thanks,
Thomas