Added missing, important function. Useful for pydoc.
Details about formatting added.
Reorganized the presentation of formatting more logically.
Added practical comment about non-factored exponents.
More explicit "don't factor exponents" method.
Better phrasing.
More precise capabilities of the formatting.
Simpler phrasing.
More explicit examples
Example that illustrates explicitly a capability of the formatting.
Merge branch 'master' into master_python2.3
More natural variable name.
Shorter example (more to the point, which is that using a formatter is not too expensive).
Fixed example.
Added explanation of format.
More explicit effect of code.
More explicit section name (the section is not about correlation matrices).
"Technical" explanation not useful.
Emphasis on main points added.
Subject not present in previous sentence: fixed.