8 To alter an existing name the line number of the name to be altered is entered, followed by the desired name. To include a new name, the user simply specifies a blank line from the appropriate file and enters the desired name. Production, Inputs and Machinery Requirements (Part 6) Part 6 of the input form (Appendix I) provides space for the user to specify the products, operating inputs and machinery usage relevant to the budget being prepared. This section of the input form can be viewed as a matrix of 50 rows and 18 columns into which the basic budget coef- ficients are entered. The first twelve columns of the matrix represent the twelve months of the year starting with January as column one and ending with December as column twelve. The thirteenth column is used to specify the price # the item; the fourteenth column is not used; the fifteenth column is used to enter the appropriate units code (as shown in Appendix IV); and the sixteenth column is used to enter the item code number from the list of 999 names (Appendix III). Column 17 contains a predesignated code that divides the 50 rows into products(2.0), operating inputs (3.0) and machinery (4.0). Typically, rows 1-10 are used for products, rows 11-37 are used for operating inputs and rows 38-48 are used for machinery. Row 50 is used for the entry of additional labor, other than machinery and irrigation labor, and row 49 is used for the entry of irrigation water use. An increase in the number of rows of a given type may then be achieved by overriding the predesig- nated row code with the appropriate new code. For example, if 12 products .were involved the 10 predesignated product rows would not be sufficient.