Positively my last word on Mandarin tonal spelling

This scheme is due to Lon Diehl and is promulgated by Mark Bosley.

Tone 1: tang
Tone 2: ttang
Tone 3: taang
Tone 4: tahng

In Tone 2, duplicate the first letter (so "sh" -> "ssh").
In Tone 3, duplicate the vowel which normally bears the tone mark.
In Tone 4, place "h" after the vowels but before any final nasal or retroflex;
  this can create some new ambiguities, like bah'a vs. ba'ha.
Toneless syllables can use a "." in front, as in Gwoyeu Romatyzh.

--
John Cowan <jcowan@...>     http://www.reutershealth.com
I amar prestar aen, han mathon ne nen,    http://www.ccil.org/~cowan
han mathon ne chae, a han noston ne 'wilith.  --Galadriel, _LOTR:FOTR_