I do not think the "railroad" program mentioned is still available.

birkenfeld · birkenfeld · commit 43a17ff016f1 · 2009-10-29T21:16:34.000Z
diff --git a/Grammar/Grammar b/Grammar/Grammar
@@ -10,18 +10,6 @@
 # NOTE WELL: You should also follow all the steps listed in PEP 306,
 # "How to Change Python's Grammar"
 
-# Commands for Kees Blom's railroad program
-#diagram:token NAME
-#diagram:token NUMBER
-#diagram:token STRING
-#diagram:token NEWLINE
-#diagram:token ENDMARKER
-#diagram:token INDENT
-#diagram:output\input python.bla
-#diagram:token DEDENT
-#diagram:output\textwidth 20.04cm\oddsidemargin  0.0cm\evensidemargin 0.0cm
-#diagram:rules
-
 # Start symbols for the grammar:
 #	single_input is a single interactive statement;
 #	file_input is a module or sequence of commands read from an input file;
