Structure of a network entry in sourcetable.

||=Count=||=Element=||=Description=||=Content=||
|| 1|| type || Indicator of a network description || Content: '''NET''' ||
|| 2|| identifier || Network Identifier - Name of station network || Text ||
|| 3|| operator || Name of institution or company operating the network || Text ||
|| 4|| authentication || access protection for data strames[[BR]] None (N),[[BR]] Basic (B) or[[br]]Digest (D) || Content: '''B''', '''D''', '''N''' or a comma seperated list of these ||
|| 5|| fee || User fee for data access: yes (Y) or no (N) || Content: '''Y''' or '''N''' ||
|| 6|| web-net || Web address for network information || URL ||
|| 7|| web-str || Web address for stream information || URL ||
|| 8|| web-reg || Web or mail address for registration || URL or e-mail ||
|| 9|| misc || Miscellaneous information || Text ||