$.control.list          Named element accessor for ergm control lists
ERRVL                   Return the first argument passed (out of any
                        number) that is not a 'try-error' (result of
                        'try' encountering an error.
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
nonsimp.update.formula
                        Functions for Querying, Validating and
                        Extracting from ERGM Formulas
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.
vector.namesmatch       reorder vector v into order determined by
                        matching the names of its elements to a vector
                        of names
