MAT operations:
A = MAT SAVE (saving matrices in matrix files)
B = MAT LOAD, LOADM (loading matrix files to edit field)
C = Standard matrix algebra (+,-,*,',INV etc.)
D = Normalizations and derived matrices
E = Element by element transformations
F = Scalars in MAT operations
G = Matrix decompositions
H = Submatrices
I = Control and auxiliary operations
J = Row and column labels
K = Additional MAT #operations
L = Linear equations and least squares solutions (MAT SOLVE)
S = Saving matrix files to Survo data files
M = More information on Matrix operations