Me is usually an object variable that refers to a sheet..
Specifically, I'm guessing that snippet is from some Worksheet Event code, like
Private Sub Worksheet_Change(ByVal Target As Range)
In that case, Me refers to whatever sheet the code is in..
So if the code is in say Sheet1
then me is simply Sheets("Sheet1")
LP = Me.Range("r4").Value
LP = Sheets("Sheet1").Range("r4").Value
Make sense?