| 2020-11-10 10:33:09 | ltk_tscc | Set release date to 8 January 1990 |
| 2020-11-10 07:58:06 | ltk_tscc | Set release date to January 1990 |
| 2014-06-30 11:32:28 | ltk_tscc | Added tag 'sndh' |
| 2014-06-30 11:32:25 | ltk_tscc | Added link http://sndh.atari.org/sndh/sndh_lf/Tangens/Synthetic_Visions_Hidden.sndh |
| 2014-06-30 11:32:17 | ltk_tscc | Set release date to 1989, platform to Atari ST/E |