Coding Standards.

PFlow Version 1 was in use for nearly 10 years. It was based on an
obsolete Dec graphics library that was very difficult to figure out
from source code which made porting nearly impossible. Given the
possible longevity of this program, I set out to ensure
maintainability. The following standards apply to the source code:

Identifiers:

	Names are are Word capitalized, vice underscore separated.
	Class datamember identifiers are prefixed d_
	function local identifiers are prefixed l_
	function parameters are prefixed p_

Functions

	inital word lowercase, following words capitalized.

Classes & Types:

	Capitalized.

Consts, and Enumerations:

	ALLCAPS, prefixed appropriate to their scope.
