Editorial computing
A = Simple arithmetics
V = Variables and expressions (also elements of matrices and data sets)
B = Numerical accuracy and form of results
M = Mathematical functions
E = Functions defined in the edit field
I = 'if' statement
F = 'for' statement
J = 'integral' statement for numerical integration
R = Roots of equations
S = Multiple activations
L = Library functions
T = Computing on tables
C = Numerical conversions
P = Multiple precision computations
X = More information on mathematical operations