| kdata.1 | Toy dataset with two convex groups with partial overlap | 
| kdata.2 | Toy dataset with two non-overalpping and non-spherical groups | 
| kdata.3 | Toy dataset with three groups | 
| kdata.4 | Toy dataset with four groups atop a wide area of noise points | 
| ksharp | sharpen a clustering | 
| medinfo | compute info on distances to medoids/centroids | 
| neiinfo | Compute info on 'neighbor widths' | 
| silinfo | Compute info on silhouette widths |