27/7/04 Updates:

- Help section in this readme file
- Hyperbolic functions added
- Approximation to cumulative normal distribution function added
- Included support for nested functions
- Display now remembers the position of the cursor so you can perform inserts
- Navigation buttons added to move the cursor left/right
- Del key added to remove characters to the left of the cursor and to the right if none available
- Ans button added so the answer to the last calculation can be included
- Hash table used to store information instead of global variables
- Calculator will now store previous equations and they can be referenced with the small < and > buttons
- Added error messages

Help section:


Button		Syntax			Details

<					Previous stored expression
>					Next stored expression
x!		fact(N), N >= 0		N factorial
C(n,r)					Combinations of r in n
P(n,r)					Permutations of r in n
norm		norm(N), N >= 0		Approximate cumulative probability of being N standard deviations from
					the mean of a normal distribution
,					Used to separate parameters in functions
Off					Closes dialog
log		log(N), N > 0		Logarithm of N in base 10
ln		ln(N), N > 0		Logarithm of N in base e (Natural Logarithm)
e		<-			Euclid's number
sin		sin(N)			Sine of N
cos		cos(N)			Cosine of N
tan		tan(N)			Tangent of N
1/x		N^-1			Reciprocal of N
^					To the power of
root		root(N[,n])		nth root of N (if n = $null it is taken as 2)
asin		asin(N), -1 <= N <= 1	Arcsine of n
acos		acos(N), -1 <= N <= 1	Arccosine of n
atan		atan(N)			Arctangent of n
(					Opening parenthesis
)					Closing parenthesis
M					Insert stored value into expression
M-					Delete stored value
MR					View stored value in second editbox
M+					Assign a value to memory
sinh		sinh(N)			Hyperbolic sine of N
cosh		cosh(N)			Hyperbolic cosine of N
tanh		tanh(N)			Hyperbolic tangent of N
asinh		asinh(N)		Hyperbolic arcsine of N
acosh		acosh(N), N >= 1	Hyperbolic arccosine of N
atanh		atanh(N), -1 < N < 1	Hyperbolic arctangent of N
<-					Move cursor to the left
Del					Delete character to the left (if none exists then delete character to the right)
->					Move cursor to the right
Phi					Insert Phi ratio
AC					Clear both editboxes
*					Multiplication
/					Division
+					Addition
-					Subtraction
.					Decimal point
Pi					Insert Pi ratio
Ans					Use previous expression's answer
=					Evaluate the expression