4 Original source is availale from:
5 http://www.cs.princeton.edu/~bwk/btl.mirror/
8 date = 20 December 2012
10 sha1 = 538fd69fb0fd01966eb41ad20c336215b4a07301
12 Note that only the latest tarball is available on B.Kernighan's site.
13 A list of files removed is in README.DELETED
15 Local modifications applied to following files: