show()
Display all user defined variables and functions.
Example
Name Type Value
a matrix "Sales", 45, 50, 55, 70, ...
"Costs", 40, 45, 60, 75, ...
f function f(x,y)=cos(x*x+y*y)
x array ( 1, 3, 4, 7, 8 )
y array ( 12, 24, 5, 5, 15 )