They specify a sequence of RELCODE transformations on keys to produce various masks in a specified order.
1) Create a mask by generalizing the SHIP_TO based on RELCODE = STATE and SHIP_FROM based on RELCODE = AREA.
2) Create a mask by generalizing AGENCY based on RELCODE = CUST_TYPE and SHIP_TO and SHIP_FROM based on RELCODE = AREA.
5) Create a mask by generalizing AGENCY and PROD2 based on RELCODE = STAX_TYPE and SHIP_TO based on RELCODE = STATE; SHIP_FROM should match anything.
"(SAME)" means do not translate the input but use it as entered; "(ANY)" means ignore the input and utilize (ANY) in the mask; and any other value signifies a RELCODE used to navigate the appropriate network table, obtain a translation of the input, and then use that translation in the mask.
123-45-678 JAN_94 350.25 123-45-678 FEB_94 600.15 123-45-678 MAR_94 27.50 Metarules are usually constructed so that operating rules are read in the following order: specific rules first; increasingly generalized rules next (based on specific RELCODES); and wildcards last.