/       \       /
           k --- a         b --- f 
          /       \       /       \
                  me --- l         i
          \       /       \       /
           j --- c         d --- e
                  \       /
                   g --- h
       
       Folklore
 (TXT) The Original Jargon File
 (TXT) Modified ESR version of The File
 (TXT) Text editor lineage
 (TXT) Influence of ed