Some commands in SymbMath have changed in different versions.

**************** Changes from Version 1.3 to 1.4 ******************
1. inte(f(x), (x from a to b)) -> inte(f(x), x from a to b).
2. Lists, arrays, vectors and matrices: (a,b,c) -> [a,b,c].
3. Zoom the HELP Mode window: <ctrl><F10> -> <F5>.
4. <Ctrl>P for printing -> <Alt>P for the Print Mode.

************* New functions in Version 1.4 ***********************
1. Standard functions: n!, abs(x).
2. Transformation functions: sum(), prod(), list(), table(), coef().
3. Calculus functions: d(f(x)/d(x), order), d(f(x), x=c, order).
4. Users-defined functions name can be any name.
5. Integrals of x^n*exp(x), x^n*sin(x), etc. where n>0.
6. The function solve() can solve systems of equations, and linear 
differential equations on one step, 

solve([a1*x+b1*y==c1, a2*x+b2*y==c2], [x,y])
solve(d(y)/d(x)+g(x)*y==h(x), y)

7. SymbMath can learn differentiation.
8. The nth element of list x is x[n], ...
9. More library (e.g. for infinite sum, etc.).
	The erros have been fixed if possible.