splits the text for curve and data labels at the specified characters when there is not
enough room to display the text normally. The text value is split into one or more
lines as needed. The split occurs every occurrence of the specified split character or
characters.
“character-list” is one or more characters with no delimiter between each character
and enclosed in quotation marks. For example, to specify the split characters a, b,
and c, use the following option:
SPLITCHAR="abc"
When multiple split characters are specified, each character in the list is treated as a
separate split character unless the specified characters ...
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