isNA                    Check if an object is NA
isargunnamed            Is an element of a list named?
mintersect              Set intersection of arbitrary number of
                        arguments
myouter                 Functions for some basic operations
nposargs                Function to count the number of positional
                        arguments used in a call
parse_text              Parse expressions residing in character vectors
raw_history             Get the command history
sim_complex             Simulate real or complex numbers using polar
                        form
sim_numbers             Simulation based on polar form specifications
