$.control.list          Named element accessor for ergm control lists
NVL                     Return the first argument passed (out of any
                        number) that is not 'NULL'.
check.control.class     Check if the class of the control list is one
                        of those that can be used by the calling
                        function
compress.data.frame     "Compress" a data frame
opttest                 Optionally test code depending on environment
                        variable.
paste.and               Concatenates the elements of a vector
                        (optionaly enclosing them in quotation marks or
                        parentheses) adding appropriate punctuation and
                        unions.
print.control.list      Pretty print the control list
set.control.class       Set the class of the control list
sort.data.frame         Implements a 'sort' method for 'data.frame',
                        sorting it in lexicographic order.
statnet.cite.pkg        'CITATION' file utilities for Statnet packages
statnetStartupMessage   Construct a "standard" startup message to be
                        printed when the package is loaded.
