There are five ways to limit the number of records CODE-1 Plus processes:
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Restrict processing to records with ZIP Codes that fall in a particular range
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Skip a portion of the file before any records are selected
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Type a cross-sectional sampling number to select a portion of the records, evenly spaced throughout the file
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Specify a maximum number of records to be processed; in this case, CODE-1 Plus will start at the beginning of the file and process every record until the maximum number is reached
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Specify a fraction of records to process or ignore.
You may use these fields in conjunction with each other. For example, you can type a number of records to skip, and a maximum number of records to read, if you wanted to process the middle of the file, but not the beginning or the end.