checked for undefined. uses blank string
checked for undefined. uses blank string

emoncms/emoncms,inverse/emoncms,emoncms/emoncms,inverse/emoncms,chaveiro/emoncms,emoncms/emoncms,chaveiro/emoncms,inverse/emoncms,chaveiro/emoncms,emoncms/emoncms,inverse/emoncms,emoncms/emoncms,chaveiro/emoncms