| cols-package | Constrained Ordinary Least Squares | 
| cls | Constrained least squares | 
| int.cls | Constrained least squares | 
| int.mcls | Constrained least squares | 
| mpcls | Positive and unit sum constrained least squares | 
| mpls | Positively constrained least squares | 
| mvcls | Constrained least squares | 
| mvpls | Positively constrained least squares with a multivariate response | 
| pcls | Positive and unit sum constrained least squares | 
| pls | Positively constrained least squares |