probe                   Probe a Data Frame for Values Corresponding to
                        a Scoped Aggregate
scoop                   Look Up Column Values for Rows In Scope
scope                   Specify Arbitrary Row Name Subsets
scope-package           Data Manipulation Using Arbitrary Row and
                        Column Criteria
score                   Calculate Lengths of Elements for a Scope
                        Object
skim                    Aggregate Across Data Frame Subsets Defined by
                        a Scope Object.
