A constant line label displays the value of a constant line.
The commonAxisSettings.constantLineStyle.label object, which is described here, specifies common settings for all constant line labels in the chart. To configure the labels of those constant lines that belong to a particular axis, use the following objects.
To configure the labels of individual constant lines use the following objects.
Individual settings override axis-specific settings which, in their turn, override common settings.
Default Value: 'inside'
Accepted Values: 'inside' | 'outside'
Default Value: true