Limiting the search to specified fields
In SNGL or TABL display format, you can optionally limit the effects of primary commands to a specified field, a list of fields, or one or more ranges of fields.
You specify the fields to be searched using #n field references. These are displayed above each field in TABL display format, or next to each field in SNGL display format. The search string is found only if it is completely contained within one of the specified fields.