olemus
(2a) liik tarkvaras teostatud sekventsereid
= a type of sequencers implemented in software
https://en.wikipedia.org/wiki/Music_tracker

(2b) BitTorrenti kliente koordineeriv server
= server software that coordinates peers in the BitTorrent protocol
https://en.wikipedia.org/wiki/Comparison_of_BitTorrent_tracker_software
https://faui1-files.cs.fau.de/filepool/gruhn/btt.pdf

vt ka
- jälgur