This also draws a square when a mover pushes the push: V3;1q;1q;{(0(?-)c(1q(1q)0(1w(1u)S(87(5n)i(1o(1o)a{c{{{A(a&(2R)(0(P^);square;square;0
Its adjustable by moving the modules(the little parts) to make a bigger square and even a rectangle + its simple
but it draws bigger squares slower