%c%                     Chain Operator
%e%                     Element In Set Operator
identity_operators      Strict Identity Operators
logical all             Several ways to evaluate whether all values
                        meet logical conditions including logical range
                        comparison helpers
logical any             Several ways to evaluate whether any values
                        meet logical conditions
logical indexes (which)
                        Several ways to return an index based on
                        logical range comparison helpers
logicals                Several logical range comparison helpers
subsetting              Several ways to subset based on logical range
                        comparison helpers
