:- use_module( library(lib) ). :- lib(mtx). :- debug(mtx(facts)). facts :- mtx_facts( data('mtcars.csv'), Mtcars ), debug( mtx(facts), 'Mtcars: ~w', [Mtcars] ), debug( mtx(facts), 'Listing of module: ~w', [Mtcars] ), listing( Mtcars:_ ), mtx_matrices_in_memory( InMem ), nl, debug( mtx(facts), 'In memory: ~w', [InMem] ).