OMTo is the outgrowth of ideas of David SANTOS working in Philadelphia.

For years, Santos has been making his lecture notes available to the public, so that students and the public in general may use them free of charge. The LaTeX code for the notes is provided, so that those wishing to modify the material in the notes may do so. The notes constitute Santos' particular take on a particular subject, but do not deviate much from standard curricula of mathematics courses at community colleges around the United States.