<b_jonas> slashlearn source//Sources for HackEgo can be found at https://bitbucket.org/GregorR/hackbot + https://bitbucket.org/GregorR/multibot + https://bitbucket.org/GregorR/umlbox . Sources for HackEso can be found at https://bitbucket.org/fizzie/hackbot + https://bitbucket.org/fizzie/multibot + https://bitbucket.org/fizzie/umlbox .

categorical product is like when you have two category elements A and B then their product is element C iff there are two morphisms p:C->A and q:C->B such that for every element X and morphisms u:X->A and v:X->B there is a unique morphism w:X->C such that u=wp and v=wq.