comment Per the ChangeLog, machine.base.x11.png is sourced under CC-SA, and relicensed under GFDL or GPL as approriate.
comment It not completely clear from the 2007 entries whether the original author is Yann Chachkoff, or someone else,
comment nor is it clear which of GFDL or GPL it was relicensed under.
comment The ChangeLog entries, for reference, are from the 11th and 12th of January 2007, and written by Kevin Bulgrien.
license unknown
sourcename unknown