The appearance of the limit lines can be controlled by the
LIMITATTRS= option.
LIMITUPPER=numeric-variable
specifies values for the upper endpoints on the limit lines. Limit lines are displayed
as line segments with a serif at the end.
Default
The upper segments of the limit lines are not displayed. (Limit lines
are displayed only if either LIMITLOWER= or LIMITUPPER= is
specified.)
Interactions
If LIMITLOWER= is also specified, then the plot displays the lower
and upper segments of the limit lines.
This option is ignored if GROUP= is specified and
GROUPDISPLAY=STACK.
The appearance ...
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