The appearance of numbers may be changed in a wide variety of ways by the post. This control over numeric format is needed to service a wide variety of controllers.
The format of numeric output is controlled by two different methods. The first method of controlling numeric output is in the header codes of the $PP file. The second method is a case-by-case basis for each number entry.
Any format string can be used to control the output of all numbers in the postprocessor.