| calc_X | Construct and Classify a Quadratic-Response Grid |
| coef_to_cbQ | Convert coefficient vectors to OptOR quadratic functions |
| find_extrema | Find extrema of a quadratic fct on a hyperrectangle |
| lm_to_cbQ | Convert fitted linear models to OptOR quadratic functions |
| optimal_cont_hr | Compute inner and outer continuous operating rectangles |
| optimal_grid_hr | Find an optimal hyperrectangle in a binary grid |