Yeah, in the 170 it'll draw the hold and entry pattern on the MFD and update it as ground speed varies. It will also do the curved courses. It's capable of the GPS 19 into DCA (i.e. the River Visual in the clouds). Does a pretty good job too. Its a great SA tool when flying the RV since it'll give you the FD guidance and the GPS glidepath as a heads up. Not that us RW guys can couple to the VNAV anyway though.