link "../ilib/snapshot"

procedure main()
   "((a+b)-delta)/(c*d))" ? (tab(bal('+-/*')) & snapshot())
   "abcdefgh" ? (tab(0) & snapshot())
   "abc\tdef\nghi" ? (tab(upto('\n')) & snapshot())
   every ("abcdefg" | "\g\f\000") ? while move(1) do
      snapshot()
end