Formula StructureProgrammingProgramming SequenceEach Formula is entered into the reader by the following sequence:Input_ID >> Length >> Match >> A-String >> O-String >>...>> O-String >> EnterA Formula starts with Input_ID and ends with “Enter”(a label in programming sheet). If a field isoptional and missing, the next one in the sequence can be entered. But “Enter” must be thelast input of a formula.PreparationTo start the data editing, the following barcode sheets are needed:-- Programming Sheet. (Setup Sheet in Appendix D).-- Full ASCII Sheet (Appendix E).-- Function Code Sheet (Appendix B or C).Before programming Data Editing, you should know the format of the original data record thatmay be altered by the setup groups.28