Group is

  smlnj-lib.cm
  ml-yacc-lib.cm

  ast/ast.sml
  ast/util.sml

  debug/debug-loop.sml

  parser/comment.sml
  parser/parser.sml
  parser/cl.grm
  parser/cl.lex

  eval/evaluation.sml
  eval/reductions.sig
  eval/reductions.sml
  eval/gc.sig
  eval/gc.sml
  eval/memory.sig
  eval/memory.sml
  eval/check.sig
  eval/check.sml
  eval/config.sml

  world/action.sig
  world/action.sml