User contributions
- 02:01, 7 April 2015 (diff | hist) . . (-207) . . 1508: Operating Systems (→Explanation: Resolved "incomplete". This is a Gantt chart; the vertical axis has no special significance beyond separating types.)
- 15:12, 1 April 2015 (diff | hist) . . (+155) . . Talk:1506: xkcloud
- 02:25, 26 August 2014 (diff | hist) . . (+185) . . 723: Seismic Waves (→Explanation)