History of Number.prototype.toFixed()

Standardize "Return value" and "Exceptions" section as per Bug 1287421, add "Description" section

add ES draft

fixing spec table (ES3 was mistakingly removed)

fix compat parsing error; cleanup

Standartized markup, added jsxref templates, added example header.

In the operator precedence case, it's the fact that it's a literal negative number that's significant.