%+%                     String operators
%+=%                    Assignment operators
%==%                    Enhanced comparisons
%na<-%                  Assign value to a vector's missing values
%ni%                    Logical operators
%regex<-%               Assign to vector only where regular expression
                        is matched
%regex=%                Modify existing object by regular expression
%~=%                    Floating point comparison operators
chr                     Cleaner conversion functions
f.as.numeric            Convert factor with numeric labels into numeric
                        vector
is.scalar               Type Checks
