This work has been released into the public domain by its author, Ricardo Cancho Niemietz at English Wikipedia. This applies worldwide. In some countries this may not be legally possible; if so: Ricardo Cancho Niemietz grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.Public domainPublic domainfalsefalse
Losslessly converted from 8-bit indexed color with only 4 evenly distributed grays used to 2-bit grayscale without palette information, and removed ancillary PNG chunks, for size reduction.