Button layout for the HP-03:

ENT	-	7	8	9	←
R↓	+	4	5	6	CHS
RCL	*	1	2	3	SST
shf	/	0	.	R/S	XEQ

ON	USR			PRG	ALP

Shifted:

CAT	1/X	SIN	COS	TAN	CLX
X↔Y	LOG	trg	mth	stt	EEX
STO	Y^X	prg	flg	cmp	BST
shf	SRX	π	LSX	VIW	set

ON	USR			PRG	ALP

Alpha:
↑		-		7		ABC8	DEF9		←
%		+		GHI4	JKL5	MNO6		∠
ARCL	*		PQRS1	TUV2	WXYZ3		SST
shf		/		spc0	.		R/S			APPEND

ON		USER					PROG		ALPHA

Shift-Alpha:
=		≠		7		abc8	def9		CLA
<		>		ghi4	jkl5	mno6		$
ASTO	Σ		pqrs1	tuv2	wxyz3		BST
?		:		spc0	,		AVIEW		APPEND

ON		USER					PROG		ALPHA

Menus:

trg - Trig
ASIN	ACOS	ATAN	P→R		R→P

mth - Math
x^2		10^x	LN		e^x		%

stt - Stat
Σ+		Σ-		CLΣ

prg - Programming
LBL		GTO		ISG		RTN		BEEP

flg - Flags
SF		CF		FS?

cmp - Compare
X=Y?	X≤Y?	X>Y?	X=0?	FS?
	
=====
set - Setup
num		trig	clk		font	ASN

num - Numeric representation
FIX		SCI		ENG

trig - Trigonometric representation
DEG		RAD		GRAD

font - Fonts
SML		MED		BIG		41

clk - Clock
CL12	CL24	CLT		CLTD
=====