SAMPA / X-SAMPA ASCII coding of the IPA

Extract from John Wells' description:

• The most frequently used symbols are mapped onto single keystrokes in the ASCII range 33..126.
• Less frequently used symbols are mapped onto a single keystroke plus the backslash, .
• Diacritics (other than those already catered for in SAMPA) are mapped onto a keystroke with a preceding underscore, _.
• Note that upper-case must be distinguished from lower-case, but that there is no need to separate successive symbols by spaces: X-SAMPA symbol strings are uniquely parsable.
• Using these codes, you can for example include IPA-phonetic transcriptions of all kinds in e-mail messages or other forms of electronic exchange. Wherever an IPA character set is not available, X-SAMPA will provide a workable alternative.
• IPA symbols belonging to the ordinary Roman lower-case alphabet (e.g. u, x) remain the same. They are not listed below.