add_meta_to_filename    Adds meta information (date and exchange) to an
                        itch filename
count_functions         Counts the messages of an ITCH-file
download_sample_file    Downloads a sample ITCH File from NASDAQs
                        Server
download_stock_directory
                        Downloads the stock directory (stock locate
                        codes) for a given date and exchange
ex20101224.TEST_ITCH_50
                        ITCH 50 Example Testing Dataset
filter_itch             Filters an ITCH file to another ITCH file
format_bytes            Formats a number of bytes
get_exchange_from_filename
                        Returns the exchange from an ITCH-filename
get_msg_classes         Returns the message class data for the message
                        types
gz_functions            Compresses and uncompresses files to and from
                        gz-archives
list_sample_files       Returns a data.table of the sample files on the
                        server
open_itch_sample_server
                        Opens the ITCH sample page
open_itch_specification
                        Opens the ITCH Specification PDF
read_functions          Reads certain messages of an ITCH-file into a
                        data.table
write_itch              Writes a data.frame or a list of data.frames of
                        ITCH messages to file
