19. A program product usable by a data processing system including a user application that can be utilized to create a base document defined by a data set stored within said data processing system, said program product comprising: a variable data area definition program, wherein in response to identification of a portion of said base document as a variable data area, said variable data area definition program builds, within said data set, at least one comment statement of a page description language, said at least one comment statement being associated with said variable data area, and wherein in response to specification of format parameters for said variable data area, said variable data area definition program encodes said format parameters within said at least one comment statement; and a signal bearing media bearing said variable data area definition program.
19. A program product usable by a data processing system including a user application that can be utilized to create a base document defined by a data set stored within said data processing system, said program product comprising: a variable data area definition program, wherein in response to identification of a portion of said base document as a variable data area, said variable data area definition program builds, within said data set, at least one comment statement of a page description language, said at least one comment statement being associated with said variable data area, and wherein in response to specification of format parameters for said variable data area, said variable data area definition program encodes said format parameters within said at least one comment statement; and a signal bearing media bearing said variable data area definition program. 20. The program product of claim 19, said variable data area definition program further comprising formatting facilities that permit a user to specify format parameters for said variable data area of said base document.