[ 源代码： libcompface ]
软件包：libcompfaceg1（1:1.5.2-5 以及其他的）
Compress/decompress images for mailheaders, libc6 runtime
Converts 48x48 .xbm format (X bitmap) files to a compressed format that can be placed in your X-Face: mail header. Some mailreaders, like exmh will then display this image when the user is reading your mail.