check_user_session      Check if user is still logged in
download_nitrc_dir      Download whole image drectory
download_nitrc_file     Download NITRC file
get_scan_params         Get scan parameters data
get_scan_resources      Get scan resources
is_this_public          Find out if the provided param is part of
                        public data
list_image_sets         Get NITRC image sets listing
nitrc_demographics      Get/list project demographics
nitrc_login             Login to NITRC
nitrc_scandata          Get/list scan data
query_nitrc             Perform RCurl operations
read_nitrc_project      Read NITRC project data
set_credentials         Set NITRC credentials.
