Growing Textbox Formatting

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I have a field on a table called ref_no, which captures 5-7 two digit
reference numbers delimited by commas (i.e., one record may contain
the following data: 21, 24, 78, 44, 31). This field is populated on a
report as a text box called ref_no_txt, whose can grow property is set
to "yes." The width of the text box accommodates 7 characters. When
the text box needs to grow in order to accommodate the total
characters for a given record, it appears as follows:

21,
24,
78,
44, 31

Is there a setting that can result in the text appearing as follows:

21, 24,
78,
44,
31

Or

21, 24,
78, 44,
31

 

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Thanks for the response. I will try some of these suggestions to see
whether I can achieve my desired results. Ultimately it is a matter
of aesthetics, but that tends to count for reports.