So linalg had iszero function, but the newer LinearAlgebra does not? I find it in ArrayTools. Have they split the old linear algebra package into two?

What is the result of this system command:


This is a bit long. What is the explanation here?

I looked up 
https://www.maplesoft.com/Applications/TopApplications.aspx
and scrolled. Often, when a new batch of applications is loaded the scroll repositions arbitrarily. Is it my browser? How do I control this?

What would it take to generate all subgroups (permutation group representation) of Symmetric(6)?

Considering galois group of P is Symmetric(6), shoudn't the answer be trivial and instant in this example?

P := s^6 + s^3 - s + 1;
galois(P);
(evala@AFactor)(P);
PolynomialTools[Split](P, s, 'SF');