These are the user rpl commands new to the 48G(X):
	ADD		AMORT		ANIMATE		ATICK			
	CHOOSE		CLTEACH		COL+		COL-
	COL->		->COL		COND		CONLIB
	CONST		CSWP		CYLIN		DARCY
	DIAG->		->DIAG		DIFFEQ		DOLIST
	DOSUBS		EGV		EGVL		ENDSUB
	EQNLIB		EYEPT		F0[LAMBDA]	FANNING
	FFT		FREE1		GRIDMAP		HEAD
	IFFT		INFORM		LIBEVAL		LININ
	[SIGMA]LIST	[PI]LIST	[DELTA]LIST	LQ
	LSQ		LU		MCALC		MERGE1
	MINEHUNT	MINIT		MITM		MROOT
	MSGBOX		MSOLVR		MUSER		NDIST
	NOVAL		NSUB		NUMX		NUMY
	PARSURFACE	PCOEF		PCOV		PCONTOUR
	PEVAL		PINIT		PROOT		PSDEV
	PVAR		QR		RANK		RANM
	RCI		RCIJ		RECT		REVLIST
	RKF		RKFERR		RKFSTEP		ROW+
	ROW-		RREF		RRK		RRKSTEP
	RSBERR		RSWP		SCHUR		SEQ
	SIDENS		SLOPEFIELD	SNRM		SOLVEQN
	SORT		SPHERE		SRAD		STREAM
	SVD		SVL		TAIL		TDELTA
	TEACH		TINC		TRACE		TVM
	TVMBEG		TVMEND		TVMROOT		VERSION
	WIREFRAME	XRECV		XSEND		XVOL
	XXRNG		YSLICE		YVOL		YYRNG
	ZFACTOR		ZVOL

		---- HP 48G Series Advanced User's Reference Manual

note: greek symbols are enclosed by []... DELTA in TDELTA is NOT a greek symbol


Hope this helps,
CJ