checked when the budget prepared from this input form is to be
 stored on the permanent budget file as a new budget, not a
 replacement of an altered budget. Storing of the budget does
 not preclude its being printed, but the cautions previously
 noted concerning the consistency of budgets to be stored must
 be born in mind.

 e. (Budget should replace old budget of same number). This item
 will seldom be checked, and as it involves changes in the perma-
 nent budget file and the loss of the budget revised (the old
 budget), it will be executed only upon approval of the appro-
 priate FARM Systems Lab supervisors.

 In conjunction with the selection of a processing system the user

must specify the price vector and machinery complement to be used in the

budget calculations. There are nine possible price vectors, or sets of

prices, for products and factors (price vector = 1, 2, ..., 9) and fifteen

machinery complements (machinery complement = 1, 2, ..., 15), although at

present only the default files (price vector = 1 and machinery complement

= 1) are operational.

Budget Identification Number (Part 1)

 The budget identification number consists of fifteen digits in ten

categories, as shown in part 1 of the input form, Appendix I. The

identification number is unique to each budget so that it can be stored

on, and retrieved from, the permanent budget storage file. The code

numbers necessary to complete a budget identification number are shown in

Appendix II.

 For example, the budget identification number for corn grain, the

sample completed budget input form shown in Appendix VI, would be as

follows:

 a. (Enterprise Code). The enterprise code for corn grain is 104,
 as shown in Appendix II, Part a. It should be noted that this
 is the same number associated with corn grain in the list of
 names (Appendix III). Thus, "104" is entered as part a. of the
 budget identification number.