A BBS that was not accessible for the majority of scene members. Access was a privilege for the "elites" of a particular sub-scene. Often (but not always!), such BBSs carried pirated software, they were protected by a NUP (new user password), their numbers were not advertised, and their ads carried slogans along the lines of "No Lamers!" or "Elite Only".

This BBS carried PC releases and/or was part of the PC scene. Please note that it does not automatically mean that the BBS ran on a PC.

A BBS that was connected to the demoscene in a more intense way than just offering demos for download. Such BBSs were affiliated with several demoscene groups, had active demosceners as sysops, or were generally know as demoscene communication hubs.

This BBS had a HPAV (=hacking/phreaking/anarchy/virii) file area.

This BBS was or still is reachable via telnet.