$.enum                  Get value from enum object
$.interface_object      Get a property from an interface object
$<-.enum                Set value of enum object
$<-.interface_object    Set a property in an interface object
$<-.typed_frame         Modify a typed data frame using $
==.enum                 Equality comparison for enum objects
[<-.typed_frame         Modify a typed data frame using [ ]
enum                    Create an enumerated type
fun                     Create a typed function
handle_violation        Handle violations based on the specified action
interface               Define an interface
print.enum              Print method for enum objects
print.enum_generator    Print method for enum generators
print.interface_object
                        Print method for interface objects
print.typed_frame       Print method for typed data frames
print.typed_function    Print method for typed functions
rbind.typed_frame       Combine typed data frames row-wise
type.frame              Create a typed data frame
validate_property       Validate a property against a given type or
                        validation function
wrap_fun_in_all         Modify a user-defined function to return a
                        single logical value
